2021-2022 Grower Success Guide | NA

Grower Success Guide

ANNUALS 2021–2022

B R I N G I N G P L A N T P O T E N T I A L T O L I F E

Introducing a new interspecific New Guinea Impatiens that is a category knockout! Spectra is versatile in sun or shade and is early-to-flower, with large flowers. Its uniform mounded habit ensures high-quality retail plants in all pots sizes and hanging baskets.

syngentaflowers-us.com/spectra

Table of Contents

WHAT’S INSIDE Technical Key.......................................1 Digital Tools Available Online. .............2 Technical Support. ..............................3

Seed Propagation................................5 Seed Finishing...................................20 Vegetative Propagation. ....................53 Vegetative Finishing...........................66

Vegetative Spring Annuals URCs.... 102 How to Read a Syngenta Tag.......... 103 Chrysal Alesco ® ............................... 104 2021–2023 Week Calendar.............. 108

Standardized Pot Guide TECHNICAL KEY

Moisture Level

NEW DESCRIPTION ROUGHLY APPLIES TO

MOISTURE LEVEL DESCRIPTION

1 – DRY

Soil is tan to gray in color, trays are extremely light, and soil pulls away from sides of container.

Pack

804, 606 packs

Large Pack

1801, 306 packs

2 – MEDIUM

Soil is light brown in color, no water can be extracted from soil, and soil will crumble apart.

1.0 pt. pot

4 in. pot

3 – MOIST

Soil is brown in color, strongly squeezing the soil will extract a few drops of water, and trays are light with no visible bend.

1.0 qt. pot

4.5 in. pot

4 – WET

Soil is dark brown but not shiny, no free water is seen at the surface of the soil, when pressed or squeezed water drips easily, and trays are heavy with a visible bend in the middle. Soil is dark brown and shiny, free water is present at the surface of the soil, water drips freely from the bottom of the tray, and trays are heavy with a visible bend in the middle.

1.25 qt. pot

6 in. pot

2.5 qt. pot

Trade gallon pot

5 – SATURATED

3.0 qt. pot

8 in. pot

1.5 gal. HB

10 in. hanging basket

Timing

Vigor

1.5 gal. pot

10 in. pot

ABBREVIATION DESCRIPTION

ABBREVIATION DESCRIPTION

2.0 gal. HB

12 in. hanging basket

C

Compact

E

Early

2.5 gal. pot

12 in. pot

C-M

Compact-Medium

E-M

Early-Mid

3.0 gal. HB

14 in. hanging basket

M

Medium

M

Mid

3.0 gal. pot

14 in. pot

M-V

Medium-Vigorous

M-L

Mid-Late

3.5 gal. pot

15 in. pot

V

Vigorous

L

Late

G R O W E R S U C C E S S G U I D E | A N N U A L S

1

Digital Tools Available Online

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• Product Availability • Field Trial Events and Results • Online Image Library • Sell Sheets

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G R O W E R S U C C E S S G U I D E | A N N U A L S

2

Technical Support

Harvey Lang Jamie Gibson

Mark Smith

Don Snow

Alicain Carlson Mike Fischer

Karl Trellinger

Keith Francis

Steffi Hugo

Sign up for our Know Before You Grow webinars, products, and technical newsletters.

G R O W E R S U C C E S S G U I D E | A N N U A L S

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Sincerity

G R O W E R S U C C E S S G U I D E | A N N U A L S

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Imara™ XDR Rose

Seed Propagation

Imara™ XDR Rose

SEED PROPAGATION

Begonia BADA BING ® /BADA BOOM ® F1 Begonia semperflorens REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw, Pelleted

7–8 weeks

1-2

No

6–8 days

72–78 °F (22–26 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm Comments: Avoid overwatering to help prevent excess algae growth and to promote root growth into the media. If germinating on the bench it is helpful to cover trays with Reemay ® or similar to help retain humidity and reduce irrigation frequency. When irrigating use low pressure/volume nozzles/breakers to avoid moving seeds around in the cell. If the daily light integral (DLI) is less than 12 mols/day adding supplemental HID light will promote a more uniform crop. Do not use plug trays that have been used previously and had a crop treated with paclobutrazol grown in them. Most Begonia semperflorens will stop growing if exposed to any level of paclobutrazol. Do not irrigate with recycled water for this reason.

Begonia BOSSA NOVA ™ F1 Begonia boliviensis REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Pelleted

7–9 weeks

1

No

14 days

73–78 °F (23–25 °C)

Not required for germination pH: 5.5–5.8

SME 0.5–1.0 mS/cm Comments: Irrigate early in the day to avoid leaf scorch when high light levels are present. Allowing the soil surface to dry between irrigations will reduce algae growth. Light is not essential for emergence, but additional light at 14 hours per day will greatly enhance germination and early growth. Maintain high humidity until day 14 when it can be reduced to around 50%. Once out of the chamber, it is helpful to cover trays with Reemay ® or similar to help retain humidity and reduce irrigation frequency. Avoid irrigating with cold water. 65° is ideal.

Begonia EUREKA ™ F1 Begonia semperflorens REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Pelleted

7–8 weeks

1-2

No

6–8 days

72–78 °F (22–26 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm Comments: Avoid overwatering to help prevent excess algae growth and to promote root growth into the media. If germinating on the bench it is helpful to cover trays with Reemay ® or similar to help retain humidity and reduce irrigation frequency. When irrigating use low pressure/volume nozzles/breakers to avoid moving seeds around in the cell. If the daily light integral (DLI) is less than 12 mols/day adding supplemental HID light will promote a more uniform crop. Do not use plug trays that have been used previously and had a crop treated with paclobutrazol grown in them. Most Begonia semperflorens will stop growing if exposed to any level of paclobutrazol. Do not irrigate with recycled water for this reason.

Begonia TOPSPIN ™ F1 Begonia semperflorens REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Pelleted

7–8 weeks

1-2

No

6–8 days

72–78 °F (22–26 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm Comments: Avoid overwatering to help prevent excess algae growth and to promote root growth into the media. If germinating on the bench it is helpful to cover trays with find and replace all Reemay ® or similar to help retain humidity and reduce irrigation frequency. When irrigating use low pressure/volume nozzles/breakers to avoid moving seeds around in the cell. If the daily light integral (DLI) is less than 12 mols/day adding supplemental HID light will promote a more uniform crop. Do not use plug trays that have been used previously and had a crop treated with paclobutrazol grown in them. Most Begonia semperflorens will stop growing if exposed to any level of paclobutrazol. Do not irrigate with recycled water for this reason.

Begonia Interspecific BOWLER ™ F1 Begonia × hybrida REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Pelleted

6–7 weeks

1

No

6–8 days

72–78 °F (22–26 °C)

Beneficial for germination

pH: 5.5–5.9 SME 0.5–0.75 mS/cm

Comments: Avoid overwatering to prevent excess algae growth and to promote root growth into the media. If germinating on the bench, it is helpful to cover trays with find and replace all Reemay ® or similar to help retain humidity and reduce irrigation frequency. When irrigating, use low pressure/volume nozzles/breakers to avoid moving seeds around in the cell. If the daily light integral (DLI) is less than 12 mols/day, adding supplemental HID light will promote a more uniform crop.

Begonia Interspecific TOPHAT ™ F1 Begonia × hybrida REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Pelleted

6–7 weeks

1

No

6–8 days

72–78 °F (22–26 °C)

Beneficial for germination

pH: 5.5–5.9 SME 0.5–0.75 mS/cm

Comments: Avoid overwatering to help prevent excess algae growth and to promote root growth into the media. If germinating on the bench, it is helpful to cover trays with Reemay ® or similar to help retain humidity and reduce irrigation frequency. When irrigating, use low pressure/volume nozzles/breakers to avoid moving seeds around in the cell. If the daily light integral (DLI) is less than 12 mols/day, adding supplemental HID light will promote a more uniform crop.

Calendula COSTA ™ OP Calendula officinalis REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw

3–4 weeks

1

Yes

5–10 days

70–72 °F (21–22 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm

Comments: Grow on the cool side. Calendulas are not recommended for fall crops where cool conditions cannot be maintained.

G R O W E R S U C C E S S G U I D E 2 0 2 1 – 2 0 2 2 | A N N U A L S

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SEED PROPAGATION

Celosia BRIGHT SPARKS ™ OP Celosia plumosa erecta REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray pH: 5.5–5.9 SME 0.9–1.3 mS/cm Comments: Bright Sparks is a facultative short day variety and will flower faster under short days. If sowing under short days, it is vital to grow the plugs under a day length of at least 14 hours to promote sufficient vegetative growth before flowering. Raw 4–5 weeks 1 Yes 2–4 days 70–75 °F (21–24 °C) Required for germination

Cleome SPARKLER ™ 2.0 F1 Cleome hassleriana REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw

3–4 weeks

1

Yes

4–6 days

80–85 °F (26–30 °C) days 68–70 °F (20–21 °C) nights

Required for germination

pH: 5.5–5.9 SME 0.9–1.3 mS/cm

Comments: A 15 °F positive DIF is recommended for best germination results. Cleome is a heavy feeder; start feeding in the plug about two weeks after sowing.

Cosmos APOLLO ™ OP Cosmos bipinnatus REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw

4–5 weeks

1

Yes

3–4 days

61–65 °F (16–18 °C)

Not required for germination pH: 5.5–5.9

SME 0.25–0.5 mS/cm

Comments: Cosmos will flower early under short days, so to allow bulking of the plug provide a 14 hour day length during propagating.

Cuphea SRIRACHA ™ F1 Cuphea llavea REC TRAY FORMS

PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw

3.5–4 weeks

1

Yes

3–5 days

70–75 °F (21–24 °C)

Not required for germination pH: 5.8–6.2

SME 0.5–0.75 mS/cm Comments: Only the first application of plant growth regulators (PGR) is necessary for the plug. After two weeks, you can alternate moisture between 2 and 4 to help tone the plugs. Provide supplemental lighting if possible if DLI is lees than 8 mols/day.

Dahlia FRESCO ™ OP Dahlia hybrida REC TRAY FORMS

PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw, Coated

3–4 weeks

1

Yes

5 days

70 °F (21 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm

Comments: Provide day extension lighting to 12– 14 hours/day to help prevent premature flower bud set.

Dahlia HARLEQUIN ™ OP Dahlia hybrida REC TRAY FORMS

PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw, Coated

3–4 weeks

1

Yes

5 days

70 °F (21 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm

Comments: Provide day extension lighting to 12-14 hours/day to help prevent premature flower bud set.

Dianthus DIABUNDA ® F1 Dianthus × barbatus REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Pelleted

5–6 weeks

1

Yes

5 days

72–74 °F (22–23 °C)

Not required for germination pH: 5.5–5.9

SME 0.9–1.3 mS/cm

Comments: Providing high light and dropping the temperature to an ADT of 60 °F (21 °C) will reduce the need for PGRs. Day extension lighting to 14 hours will hasten flowering of the finished plant.

Dianthus SUPER PARFAIT ™ F1 Dianthus chinensis REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw, Pelleted

5–6 weeks

1

Yes

5 days

72–74 °F (22–23 °C)

Not required for germination pH: 5.5–5.9

SME 0.9–1.3 mS/cm

Comments: Providing high light and dropping the temperature to an ADT of 60 °F (21 °C) will reduce the need for PGRs. Day extension lighting to 14 hours will hasten flowering of the finished plant.

Dianthus VENTI PARFAIT ™ F1 Dianthus chinensis REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw, Pelleted

5–6 weeks

1

Yes

5 days

72–74 °F (22–23 °C)

Not required for germination pH: 5.5–5.9

SME 0.9–1.3 mS/cm

Comments: Providing high light and dropping the temperature to an ADT of 60 °F (21 °C) will reduce the need for PGRs. Day extension lighting to 14 hours will hasten flowering of the finished plant.

G R O W E R S U C C E S S G U I D E 2 0 2 1 – 2 0 2 2 | A N N U A L S

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SEED PROPAGATION

English Daisy / Bellis BAM BAM ™ OP Bellis perennis REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Pelleted

5–6 weeks

1

Yes

3–5 days

65–70 °F (18–21 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm

Comments: As plugs mature, reduce irrigation frequency to tone plants.

Gazania BIG KISS ™ F1 Gazania rigens REC TRAY FORMS

PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw

5–6 weeks

1

Yes

4–6 days

70–75 °F (21–24 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm

Comments: Growing Gazania plugs on the dry side and keeping them moderately cool will help prevent leaf stretch.

Gazania FROSTY KISS ™ F1 Gazania rigens REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw

5–6 weeks

1

Yes

4–6 days

70–75 °F (21–24 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm

Comments: Growing Gazania plugs on the dry side and keeping them moderately cool will help prevent leaf stretch.

Gazania GAZOO ™ OP Gazania rigens REC TRAY FORMS

PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw

5–6 weeks

1

Yes

4–6 days

70–75 °F (21–24 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm

Comments: Growing Gazania plugs on the dry side and keeping them moderately cool will help prevent leaf stretch.

Gazania KISS ™ F1 Gazania rigens REC TRAY FORMS

PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw

5–6 weeks

1

Yes

4–6 days

70–75 °F (21–24 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm

Comments: Growing Gazania plugs on the dry side and keeping them moderately cool will help prevent leaf stretch.

Geranium BULLSEYE ™ F1 Pelargonium × hortorum REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Coated

4–5 weeks

1

Yes

1–3 days

73 °F (23 °C)

Not required for germination pH: 6.1–6.5

SME 0.9–1.3 mS/cm Comments: Geraniums are irradiance plants so the more light they receive the faster they will flower. Under short days or cloudy conditions it is beneficial to provide supplemental lighting of around 400 foot candles (4,000 lux) especialy in the plug tray to speed up flowering. All geraniums are especially sensitive to bacterial diseases so be sure to start with clean plug trays, media and propagation areas. Geranium seed does not carry bacterial diseases so if you start clean you can stay clean. Do not subirrigate or use recycled water. Media pH should not drop below 6.0 or the plants may suffer from iron and/or manganese toxicity.

Geranium MAVERICK ™ F1 Pelargonium × hortorum REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Coated

4–5 weeks

1

Yes

1–3 days

73 °F (23 °C)

Not required for germination pH: 6.1–6.5

SME 0.9–1.3 mS/cm Comments: Geraniums are irradiance plants so the more light they receive the faster they will flower. Under short days or cloudy conditions it is beneficial to provide supplemental lighting of around 400 foot candles (4,000 lux) especialy in the plug tray to speed up flowering. All geraniums are especially sensitive to bacterial diseases so be sure to start with clean plug trays, media and propagation areas. Geranium seed does not carry bacterial diseases so if you start clean you can stay clean. Do not subirrigate or use recycled water. Media pH should not drop below 6.0 or the plants may suffer from iron and/or manganese toxicity.

Geranium MULTIBLOOM ™ F1 Pelargonium × hortorum REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Coated

4–5 weeks

1

Yes

1–3 days

73 °F (23 °C)

Not required for germination pH: 6.1–6.5

SME 0.9–1.3 mS/cm Comments: Geraniums are irradiance plants so the more light they receive the faster they will flower. Under short days or cloudy conditions it is beneficial to provide supplemental lighting of around 400 foot candles (4,000 lux) especialy in the plug tray to speed up flowering. All geraniums are especially sensitive to bacterial diseases so be sure to start with clean plug trays, media and propagation areas. Geranium seed does not carry bacterial diseases so if you start clean you can stay clean. Do not subirrigate or use recycled water. Media pH should not drop below 6.0 or the plants may suffer from iron and/or manganese toxicity.

G R O W E R S U C C E S S G U I D E 2 0 2 1 – 2 0 2 2 | A N N U A L S

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SEED PROPAGATION

Geranium PINTO ™ PREMIUM F1 Pelargonium × hortorum REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Coated

4–5 weeks

1

Yes

1–3 days

73 °F (23 °C)

Not required for germination pH: 6.1–6.5

SME 0.9–1.3 mS/cm Comments: Geraniums are irradiance plants so the more light they receive the faster they will flower. Under short days or cloudy conditions it is beneficial to provide supplemental lighting of around 400 foot candles (4,000 lux) especialy in the plug tray to speed up flowering. All geraniums are especially sensitive to bacterial diseases so be sure to start with clean plug trays, media and propagation areas. Geranium seed does not carry bacterial diseases so if you start clean you can stay clean. Do not subirrigate or use recycled water. Media pH should not drop below 6.0 or the plants may suffer from iron and/or manganese toxicity.

Geranium QUANTUM ™ F1 Pelargonium × hortorum REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Coated

4–5 weeks

1

Yes

1–3 days

73 °F (23 °C)

Not required for germination pH: 6.1–6.5

SME 0.9–1.3 mS/cm Comments: Geraniums are irradiance plants; the more light they receive, the faster they will flower. Under short days or cloudy conditions, it is beneficial to provide supplemental lighting of around 400 foot candles (4,000 lux), especially in the plug tray to speed up flowering. All geraniums are especially sensitive to bacterial diseases, so be sure to start with clean plug trays, media and propagation areas. Geranium seed does not carry bacterial diseases, so if you start clean you can stay clean. Do not subirrigate or use recycled water. Media pH should not drop below 6.0, or the plants may suffer from iron and/or manganese toxicity.

Geranium RINGO 2000 ™ F1 Pelargonium × hortorum REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Coated

4–5 weeks

1

Yes

1–3 days

73 °F (23 °C)

Not required for germination pH: 6.1–6.5

SME 0.9–1.3 mS/cm Comments: Geraniums are irradiance plants so the more light they receive the faster they will flower. Under short days or cloudy conditions it is beneficial to provide supplemental lighting of around 400 foot candles (4,000 lux) especialy in the plug tray to speed up flowering. All geraniums are especially sensitive to bacterial diseases so be sure to start with clean plug trays, media and propagation areas. Geranium seed does not carry bacterial diseases so if you start clean you can stay clean. Do not subirrigate or use recycled water. Media pH should not drop below 6.0 or the plants may suffer from iron and/or manganese toxicity.

Geranium Ivy REACH OUT ™ F1 Pelargonium peltatum REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Coated

5–6 weeks

1

Yes

4 days

73 °F (23 °C)

Not required for germination pH: 5.8–6.2

SME 0.9–1.3 mS/cm Comments: Geraniums are irradiance plants so the more light they receive the faster they will flower. Under short days or cloudy conditions it is beneficial to provide supplemental lighting of around 400 foot candles (4,000 lux) especialy in the plug tray to speed up flowering. All geraniums are especially sensitive to bacterial diseases so be sure to start with clean plug trays, media and propagation areas. Geranium seed does not carry bacterial diseases so if you start clean you can stay clean. Do not subirrigate or use recycled water. Media pH should not drop below 6.0 or the plants may suffer from iron and/or manganese toxicity.

Geranium Ivy TORNADO ™ F1 Pelargonium peltatum REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Coated

5–6 weeks

1

Yes

4 days

73 °F (23 °C)

Not required for germination pH: 5.8–6.2

SME 0.9–1.3 mS/cm Comments: Geraniums are irradiance plants so the more light they receive the faster they will flower. Under short days or cloudy conditions it is beneficial to provide supplemental lighting of around 400 foot candles (4,000 lux) especialy in the plug tray to speed up flowering. All geraniums are especially sensitive to bacterial diseases so be sure to start with clean plug trays, media and propagation areas. Geranium seed does not carry bacterial diseases so if you start clean you can stay clean. Do not subirrigate or use recycled water. Media pH should not drop below 6.0 or the plants may suffer from iron and/or manganese toxicity.

Gerbera BENGAL ™ F1 Gerbera jamesonii REC TRAY FORMS

PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

128-cell tray pH: 5.5–5.9 SME 0.5–0.75 mS/cm Comments: Under low light conditions provide supplemental HID light if possible; do not extend daylength as this will extend the time to flower. It is critical to allow adequate dry back between irrigations to prevent stunted and distorted growth. Because of this do not mist at night. If germinating on a bench it is best to use a tent system to increase humidity and reduce the frequency of irrigations/misting. SatinCoat ™ 5–6 weeks 1 No 4 days 74–76 °F (23–24 °C) Required for germination

Gerbera CARTWHEEL ® F1 Gerbera jamesonii REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

128-cell tray pH: 5.5–5.9 SME 0.5–0.75 mS/cm Comments: Under low light conditions provide supplemental HID light if possible; do not extend daylength as this will extend the time to flower. It is critical to allow adequate dry back between irrigations to prevent stunted and distorted growth. Because of this do not mist at night. If germinating on a bench it is best to use a tent system to increase humidity and reduce the frequency of irrigations/misting. SatinCoat ™ 5–6 weeks 1 No 4 days 74–76 °F (23–24 °C) Required for germination

Gerbera ELEPHANT ™ F1 Gerbera jamesonii REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

128-cell tray pH: 5.5–5.9 SME 0.5–0.75 mS/cm Comments: Under low light conditions provide supplemental HID light if possible; do not extend daylength as this will extend the time to flower. It is critical to allow adequate dry back between irrigations to prevent stunted and distorted growth. Because of this do not mist at night. If germinating on a bench it is best to use a tent system to increase humidity and reduce the frequency of irrigations/misting. SatinCoat ™ 5–6 weeks 1 No 4 days 74–76 °F (23–24 °C) Required for germination

G R O W E R S U C C E S S G U I D E 2 0 2 1 – 2 0 2 2 | A N N U A L S

8

SEED PROPAGATION

Gerbera JAGUAR ™ F1 Gerbera jamesonii REC TRAY FORMS

PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

128-cell tray pH: 5.5–5.9 SME 0.5–0.75 mS/cm Comments: Under low light conditions provide supplemental HID light if possible; do not extend daylength as this will extend the time to flower. It is critical to allow adequate dry back between irrigations to prevent stunted and distorted growth. Because of this do not mist at night. If germinating on a bench it is best to use a tent system to increase humidity and reduce the frequency of irrigations/misting. SatinCoat ™ 5–6 weeks 1 No 4 days 74–76 °F (23–24 °C) Required for germination

Hibiscus HONEYMOON ™ F1 Hibiscus moscheutos REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

200-cell tray

Raw

3–4 weeks

1

Yes

3–5 days

75–81 °F (24–27 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm

Comments: If Cycocel ® is applied, seedlings may temporarily yellow. Begin feeding at 75 ppm N at radical emergence.

Impatiens ACCENT ™ F1 Impatiens walleriana REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray pH: 5.8–6.2 SME 0.5–0.75 mS/cm Comments: Use a calcium based fertilizer and feed once a week at most to avoid soft growth and stretching of plugs. Do not let plants go into the night with wet foliage or tip abortion may occur. Downward cupping or twisting of immature leaves may be caused by overuse of PGRs. Subdue Maxx ® and/or Segway ® drenches are recommended plug stage fungicides for disease management. Raw 4–5 weeks 1 Yes 3–5 days 72–75 °F (22–24 °C) Required for germination

Impatiens ACCENT ™ PREMIUM F1 Impatiens walleriana REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray pH: 5.8–6.2 SME 0.5–0.75 mS/cm Comments: Use a calcium based fertilizer and feed once a week at most to avoid soft growth and stretching of plugs. Do not let plants go into the night with wet foliage or tip abortion may occur. Downward cupping or twisting of immature leaves may be caused by overuse of PGRs. Subdue Maxx ® and/or Segway ® drenches are recommended plug stage fungicides for disease management. Raw 4–5 weeks 1 Yes 3–5 days 72–75 °F (22–24 °C) Required for germination

Impatiens ATHENA ™ F1 Impatiens walleriana REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray pH: 5.8–6.2 SME 0.5–0.75 mS/cm Comments: Use a calcium-based fertilizer and feed once a week at most to avoid soft growth and stretching of plugs. Do not let plants go into the night with wet foliage or tip abortion may occur. Downward cupping or twisting of immature leaves may be caused by overuse of PGRs. Subdue Maxx ® and/or Segway ® drenches are recommended plug stage fungicides for disease management. Raw 4–5 weeks 1 Yes 3–5 days 72–75 °F (22–24 °C) Required for germination

Impatiens IMARA ™ XDR F1 Impatiens walleriana REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw

4–5 weeks

1

Yes

3–5 days

72–75 °F (22–24 °C)

Required for germination

pH: 5.8–6.2 SME 0.5–0.75 mS/cm

Comments: Use a calcium based fertilizer and feed once a week at most to avoid soft growth and stretching of plugs. Do not let plants go into the night with wet foliage or tip abortion may occur. Downward cupping or twisting of immature leaves may be caused by overuse of PGRs. Subdue Maxx ® and/or Segway ® drenches are recommended plug stage fungicides for disease management, and rotations of Mural ® and Micora ® sprays and Segovis ® sprays or drenches are recommended for the finishing stage. For more information on Imara ™ XDR visit us at www.syngentaflowers-us.com/Imara.

Impatiens XTREME ™ F1 Impatiens walleriana REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray pH: 5.8–6.2 SME 0.5–0.75 mS/cm Comments: Use a calcium based fertilizer and feed once a week at most to avoid soft growth and stretching of plugs. Do not let plants go into the night with wet foliage or tip abortion may occur. Downward cupping or twisting of immature leaves may be caused by overuse of PGRs. Subdue Maxx ® and/or Segway ® drenches are recommended plug stage fungicides for disease management. Raw 4–5 weeks 1 Yes 3–5 days 72–75 °F (22–24 °C) Required for germination

Impatiens New Guinea FLORIFIC ® F1 Impatiens hawkeri REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw

4–6 weeks

1

Yes

8 days

70–75 °F (22–24 °C)

Not required for germination pH: 5.8–6.2

SME 0.9–1.3 mS/cm

Comments: Ensure a good scouting program for Thrips is in place.

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9

SEED PROPAGATION

Marigold African ANTIGUA ™ F1 Tagetes erecta REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Detailed, SatinCoat ™

4–5 weeks

1

Yes

3–5 days

72–75 °F (22–24 °C)

Not required for germination pH: 6.1–6.5

SME 0.5–0.75 mS/cm

Comments: Easy to germinate on the bench. Maintain media pH above 6.2 to avoid iron/manganese toxicity. Short days will shorten time to flower.

Marigold African BIG TOP ™ F1 Tagetes erecta REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Coated, Detailed

4–5 weeks

1

Yes

3–5 days

72–75 °F (22–24 °C)

Not required for germination pH: 6.1–6.5

SME 0.5–0.75 mS/cm

Comments: Easy to germinate on the bench. Maintain media pH above 6.2 to avoid iron/manganese toxicity. Short days reduces time to flower.

Marigold African INCA II ™ F1 Tagetes erecta REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Detailed, SatinCoat ™

4–5 weeks

1

Yes

3–5 days

72–75 °F (22–24 °C)

Not required for germination pH: 6.1–6.5

SME 0.5–0.75 mS/cm

Comments: Easy to germinate on the bench. Maintain media pH above 6.2 to avoid iron/manganese toxicity. Short days will shorten time to flower.

Marigold African PERFECTION ™ F1 Tagetes erecta REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Detailed, SatinCoat ™

4–5 weeks

1

Yes

3–5 days

72–75 °F (22–24 °C)

Not required for germination pH: 6.1–6.5

SME 0.5–0.75 mS/cm

Comments: Easy to germinate on the bench. Maintain media pH above 6.2 to avoid iron/manganese toxicity. Short days will shorten time to flower.

Marigold French anemone ALUMIA ™ OP Tagetes patula nana REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Coated, Detailed

3–4 weeks

1

Yes

3–5 days

68–72 °F (20–22 °C)

Not required for germination pH: 5.8–6.2

SME 0.5–0.75 mS/cm Comments: Very easy to germinate on the bench. If seedlings get stretched, they can be planted deep at transplanting, and new roots will form along the stems. Do not hold too long in the plug tray or stress-induced flowering may occur, and plants will flower before bulking up to a satisfactory size.

Marigold French dwarf crested HAPPY ™ OP Tagetes patula nana REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Detailed, SatinCoat ™

3–4 weeks

1

Yes

3–5 days

68–72 °F (20–22 °C)

Not required for germination pH: 5.8–6.2

SME 0.5–0.75 mS/cm Comments: Very easy to germinate on the bench. If seedlings get stretched, they can be planted deep at transplanting, and new roots will form along the stems. Do not hold too long in the plug tray or stress-induced flowering may occur, and plants will flower before bulking up to a satisfactory size. Happy is a genetically compact series, so chemical growth regulators are usually not necessary. Control can also be gained by good moisture management and applications of various growth regulators if needed.

Marigold Interspecific ENDURANCE ™ F1 Tagetes triploid REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

SatinCoat ™

3–4 weeks

1

Yes

3–5 days

68–72 °F (20–22 °C)

Not required for germination pH: 5.8–6.2

SME 0.5–0.75 mS/cm Comments: Very easy to germinate on the bench. If seedlings get stretched, they can be planted deep at transplanting and new roots will form along the stems. Do not hold too long in the plug tray or stress-induced flowering may occur and plants will flower before bulking up to a satisfactory size.

Marigold Interspecific ZENITH ™ F1 Tagetes triploid REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Detailed

3–4 weeks

1

Yes

3–5 days

68–72 °F (20–22 °C)

Not required for germination pH: 5.8–6.2

SME 0.5–0.75 mS/cm Comments: Very easy to germinate on the bench. If seedlings get stretched, they can be planted deep at transplanting, and new roots will form along the stems. Do not hold too long in the plug tray or stress-induced flowering may occur, and plants will flower before bulking up to a satisfactory size.

Mimulus MAGIC ™ F1 Mimulus × hybrida REC TRAY FORMS

PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Pelleted

4–5 weeks

1

No

5–7 days

65–68 °F (18–20 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm

Comments: Provide day extension lighting to 14 hours under short days using mum type lights (10 foot candles). Using HID lights can promote too early of flowering.

G R O W E R S U C C E S S G U I D E 2 0 2 1 – 2 0 2 2 | A N N U A L S

10

SEED PROPAGATION

Nicotiana PERFUME ™ F1 Nicotiana × sandrea REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Pelleted

4–5 weeks

1

No

3–5 days

70–75 °F (21–24 °C)

Required for germination

pH: 5.5–5.9 SME 0.9–1.3 mS/cm

Comments: Cool days with high light will reduce the need to apply PGRs.

Nicotiana SARATOGA ™ F1 Nicotiana × alata REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Pelleted

4–5 weeks

1

No

3–5 days

70–75 °F (21–24 °C)

Required for germination

pH: 5.5–5.9 SME 0.9–1.3 mS/cm

Comments: Cool days with high light will reduce the need to apply PGRs.

Osteospermum ASTI ™ F1 Osteospermum ecklonis REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw

4–5 weeks

1

Yes

8–12 days

68–70 °F (21–22 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm Comments: It is very important to spray the plugs with Cycocel ® at 300 ppm about 10 days after sowing to help reduce hypocotyl stretch. Shorter hypocotyls will result in a stronger central stem after transplant and will reduce floppiness in the finished plant.

Pansy COLOSSUS ™ F1 Viola × wittrockiana REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray pH: 5.5–5.9 SME 0.9–1.3 mS/cm Comments: Keep media pH below 5.8 to help avoid Thielaviopsis infections. Under hot temperatures provide lower light levels to reduce heat stress. Do not hold Pansy plugs - transplant before plugs get root bound. Raw, PreNova 5–6 weeks 1 Yes 5 days 65–68 °F (18–20 °C) Required for germination

Pansy DELTA ™ F1 Viola × wittrockiana REC TRAY FORMS

PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray pH: 5.5–5.9 SME 0.9–1.3 mS/cm Comments: Keep media pH below 5.8 to help avoid Thielaviopsis infections. Under hot temperatures provide lower light levels to reduce heat stress. Do not hold Pansy plugs - transplant before plugs get root bound. Raw, PreNova 5–6 weeks 1 Yes 5 days 65–68 °F (18–20 °C) Required for germination

Pansy DELTA ™ PREMIUM F1 Viola × wittrockiana REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray pH: 5.5–5.9 SME 0.9–1.3 mS/cm Comments: Keep media pH below 5.8 to help avoid Thielaviopsis infections. Under hot temperatures provide lower light levels to reduce heat stress. Do not hold Pansy plugs - transplant before plugs get root bound. Raw, PreNova 5–6 weeks 1 Yes 5 days 65–68 °F (18–20 °C) Required for germination

Pansy DELTA ™ SPEEDY F1 Viola × wittrockiana REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray pH: 5.5–5.9 SME 0.9–1.3 mS/cm Comments: Keep media pH below 5.8 to help avoid Thielaviopsis infections. Under hot temperatures provide lower light levels to reduce heat stress. Do not hold Pansy plugs - transplant before plugs get root bound. Raw, PreNova 5–6 weeks 1 Yes 5 days 65–68 °F (18–20 °C) Required for germination

Pansy Spreading FREEFALL ™ F1 Viola × wittrockiana REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray pH: 5.5–5.9 SME 0.9–1.3 mS/cm Comments: Keep media pH below 5.8 to help avoid Thielaviopsis infections. Under hot temperatures provide lower light levels to reduce heat stress. Also if very frequent irrigation occurs due to high temperatures apply a supplemental feed of Solubor ® to avoid Boron deficiency. Primed 4–5 weeks 1 Yes 5 days 65–68 °F (18–20 °C) Required for germination

Pansy Spreading FREEFALL ™ XL F1 Viola × wittrockiana REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray pH: 5.5–5.9 SME 0.9–1.3 mS/cm Comments: Keep media pH below 5.8 to help avoid Thielaviopsis infections. Under hot temperatures, provide lower light levels to reduce heat stress. If frequent irrigation occurs due to high temperatures, apply a supplemental feed of Solubor ® to avoid Boron deficiency. Primed 4–5 weeks 1 Yes 5 days 65–68 °F (18–20 °C) Required for germination

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11

SEED PROPAGATION

Penstemon ARABESQUE ® F1 Penstemon hartwegii REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw

5–6 weeks

1

Yes

7 days

68–73 °F (20–23 °C)

Not required for germination pH: 5.8–6.2

SME 0.5–0.75 mS/cm

Comments: Warm day temperatures can promote soft growth and excessive stem elongation.

Penstemon PARTYBELLS ™ F1 Penstemon hartwegii REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw

5–6 weeks

1

Yes

7 days

68–73 °F (20–23 °C)

Not required for germination pH: 5.8–6.2

SME 0.5–0.75 mS/cm

Comments: Warm day temperatures can promote soft growth and excessive stem elongation.

Pentas BEEBRIGHT ™ F1 Pentas lanceolata REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Pelleted

7–8 weeks

1

No

7–10 days

73–76 °F 23–24 °C)

Not required for germination pH: 6.1–6.5

SME 0.9–1.3 mS/cm

Comments: Provide supplemental lighting when DLI is less than 12 mols/day. Monitor pH and maintain above 6.1, or growth can stall.

Pentas HONEYCLUSTER ™ F1 Pentas lanceolata REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Pelleted

7–8 weeks

1

No

7–10 days

73–76 °F (23–24 °C)

Not required for germination pH: 6.1–6.5

SME 0.9–1.3 mS/cm

Comments: Provide supplemental lighting when DLI is less than 12 mols/day. Monitor pH levels and maintain above 6.1, or growth can stall.

Petunia grandiflora DUVET ™ F1 Petunia grandiflora REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Pelleted

4–5 weeks

1

No

3–5 days

72–76 °F (22–24 °C)

Required for germination

pH: 5.5–5.9 SME 0.9–1.3 mS/cm

Comments: Covering seed is not necessary but a light vermiculite coating will help maintain moisture levels in drier climates. Keep pelleted seed at moisture level 5 the first several days to ensure the pellet is completely dissolved. Providing long days in the plug stage will reduce overall time to flower. Low boron levels can induce tip abortion. Spraying an uneven plug tray with B-Nine ® WSG at 1,500 ppm may help even the growth in the tray.

Petunia grandiflora FROST ™ F1 Petunia grandiflora REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw, Pelleted

4–5 weeks

1

No

3–5 days

72–76 °F (22–24 °C)

Required for germination

pH: 5.5–5.9 SME 0.9–1.3 mS/cm

Comments: Covering seed is not necessary but a light vermiculite coating will help maintain moisture levels in drier climates. Keep pelleted seed at moisture level 5 the first several days to ensure the pellet is completely dissolved. Providing long days in the plug stage will reduce overall time to flower. Low boron levels can induce tip abortion. Spraying an uneven plug tray with B-Nine ® WSG at 1,500 ppm may help even the growth in the tray.

Petunia grandiflora TRITUNIA ™ F1 Petunia grandiflora REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw, Pelleted

4–5 weeks

1

No

3–5 days

72–76 °F (22–24 °C)

Required for germination

pH: 5.5–5.9 SME 0.9–1.3 mS/cm

Comments: Covering seed is not necessary but a light vermiculite coating will help maintain moisture levels in drier climates. Keep pelleted seed at moisture level 5 the first several days to ensure the pellet is completely dissolved. Providing long days in the plug stage will reduce overall time to flower. Low boron levels can induce tip abortion. Spraying an uneven plug tray with B-Nine ® WSG at 1,500 ppm may help even the growth in the tray.

Petunia milliflora PICOBELLA ™ F1 Petunia milliflora REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray pH: 5.5–5.9 SME 0.9–1.3 mS/cm Comments: Covering seed is not necessary but a light vermiculite coating will help maintain moisture levels in drier climates. Keep pelleted seed at moisture level 5 the first several days to ensure the pellet is completely dissolved. Providing long days in the plug stage will reduce overall time to flower. Low boron levels can induce tip abortion. Pelleted 4–5 weeks 1 No 3–5 days 72–76 °F (22–24 °C) Required for germination

Petunia multiflora DAMASK ™ F1 Petunia multiflora REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Pelleted

4–5 weeks

1

No

3–5 days

72–76 °F (22–24 °C)

Required for germination

pH: 5.5–5.9 SME 0.9–1.3 mS/cm

Comments: Covering seed is not necessary but a light vermiculite coating will help maintain moisture levels in drier climates. Keep pelleted seed at moisture level 5 the first several days to ensure the pellet is completely dissolved. Providing long days in the plug stage will reduce overall time to flower. Low boron levels can induce tip abortion. Spraying an uneven plug tray with B-Nine ® WSG at 1,500 ppm may help even the growth in the tray.

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12

SEED PROPAGATION

Petunia multiflora HURRAH ™ F1 Petunia multiflora REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Pelleted

4–5 weeks

1

No

3–5 days

72–76 °F (22–24 °C)

Required for germination

pH: 5.5–5.9 SME 0.9–1.3 mS/cm

Comments: Covering seed is not necessary but a light vermiculite coating will help maintain moisture levels in drier climates. Keep pelleted seed at moisture level 5 the first several days to ensure the pellet is completely dissolved. Providing long days in the plug stage will reduce overall time to flower. Low boron levels can induce tip abortion. Spraying an uneven plug tray with B-Nine ® WSG at 1,500 ppm may help even the growth in the tray.

Petunia spreading FOTOFINISH ™ F1 Petunia pendula REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Pelleted

4–5 weeks

1

No

3–5 days

72–76 °F (22–24 °C)

Required for germination

pH: 5.5–5.9 SME 0.9–1.3 mS/cm

Comments: Covering seed is not necessary, but a light vermiculite coating will help maintain moisture levels in drier climates. Keep pelleted seed at moisture level 5 the first several days to ensure the pellet is completely dissolved. Providing long days in the plug stage will reduce overall time to flower. Low boron levels can induce tip abortion. Spraying an uneven plug tray with B-Nine ® WSG at 1,500 ppm may help even the growth in the tray.

Petunia spreading grandiflora SKYBOX ™ F1 Petunia pendula REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray pH: 5.5–5.9 SME 0.9–1.3 mS/cm Comments: Covering seed is Not necessary but a light vermiculite coating will help maintain moisture levels in drier climates. Keep pelleted seed at moisture level 5 the first several days to ensure the pellet is completely dissolved. Providing long days in the plug stage will reduce overall time to flower. Low boron levels can induce tip abortion. Pelleted 4–5 weeks 1 No 3–5 days 72–76 °F (22–24 °C) Required for germination

Petunia spreading milliflora FLASHFORWARD ™ F1 Petunia pendula REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Pelleted

4–5 weeks

1

No

3–5 days

72–76 °F (22–24 °C)

Required for germination

pH: 5.5–5.9 SME 0.9–1.3 mS/cm

Comments: Covering seed is not necessary but a light vermiculite coating will help maintain moisture levels in drier climates. Keep pelleted seed at moisture level 5 the first several days to ensure the pellet is completely dissolved. Providing long days in the plug stage will reduce overall time to flower. Low boron levels can induce tip abortion. Spraying an uneven plug tray with B-Nine ® WSG at 1,500 ppm may help even the growth in the tray.

Phlox POPSTARS ™ F1 Phlox drummondii REC TRAY FORMS

PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw

4–5 weeks

1

Yes

3–5 days

68–72 °F 20–22 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm Comments: Keep EC less than 0.75 mS/cm as Phlox drummondii are sensitive to high salts. Keep EC less than 0.75 mS/cm and avoid the dry-growing method of growth control, as Phlox drummondii are sensitive to high salts.

Primula LIBRE ™ F1 Primula obconica REC TRAY FORMS

PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw

6–7 weeks

1

Yes

7 days

72–75 °F (22–24 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm

Comments: Control Thrips to avoid Tospovirus.

Primula PRIMERA ™ F1 Primula acaulis REC TRAY FORMS

PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw, Primed

6–7 weeks

1

Yes

7 days

64–68 °F (18–20 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm

Comments: Grow plugs on the dry side to avoid excessive algae growth.

Ranunculus MACHÉ ™ F1 Ranunculus asiaticus REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw, Pelleted

8–10 weeks

1

Yes

14–21 days

50–55 °F (10–13 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm

Comments: Control Thrips to avoid Tospovirus.

Ranunculus MAGIC ™ F1 Ranunculus asiaticus REC TRAY FORMS PLUG TIME

SEEDS/CELL SEED COVER GERM TIME

SOIL TEMP

GERM LIGHT

MEDIA pH/EC

288-cell tray

Raw, Pelleted

8–10 weeks

1

Yes

14–21 days

50–55 °F (10–13 °C)

Not required for germination pH: 5.5–5.9

SME 0.5–0.75 mS/cm

Comments: Control Thrips to avoid Tospovirus.

G R O W E R S U C C E S S G U I D E 2 0 2 1 – 2 0 2 2 | A N N U A L S

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