2024 Grower Success Guide | Americas

ANNUALS | VEGETATIVE PROPAGATION

Impatiens interspecific Impatiens Interspecific New Guinea SPECTRA ™ REC TRAY PRODUCT FORM ROOTING HORMONE MIST TIME

PINCH

PROP TIME BOTTOM HEAT

105-cell (30 mm) or larger

URC

Not recommended

CapSil ® (spray adjuvant) can be sprayed on the cuttings at a rate of 2–4 oz/100 gal within 1–2 days after sticking to help rehydrate the cuttings. Misting should be significantly reduced after 3–4 days and after cuttings become fully hydrated.

Not recommended

3.5–4 weeks 70–74 °F (21–23 °C)

Comments: To control growth, sprays of Bonzi ® (1–2 ppm) are generally used. Growers can also spray Florel ® (250–300 ppm) at 1–2 days after sticking unrooted cuttings to reduce premature flower bud development and help provide more uniform (but delayed) flowering during finishing. This is a good strategy for baskets or large patio pots where early flowering is not desired.

Impatiens walleriana Impatiens SILHOUETTE ® REC TRAY PRODUCT FORM ROOTING HORMONE MIST TIME

PINCH

PROP TIME BOTTOM HEAT

105-cell (30 mm) or larger

URC, AutoStix ®

Not recommended

CapSil ® (spray adjuvant) can be sprayed on the cuttings at a rate of 2–4 oz/100 gal within 1–2 days after sticking to help rehydrate the cuttings. Misting should be significantly reduced after 3–4 days and after cuttings become fully hydrated.

Not recommended

3.5–4 weeks 70–74 °F (21–23 °C)

Comments: To control growth, sprays of Bonzi ® (5 ppm) can be applied. Growers can also try a combo spray of Florel ® (350 ppm) + B-Nine ® WSG (1,500 ppm) to control growth and improve branching. Silhouette Impatiens are fast rooters and will be ready to transplant from propagation relatively quickly. Unrooted cuttings are sensitive to chilling, so avoid storing cuttings <50°F (10 °C). Subdue Maxx ® and/or Segway ® drenches are recommended plug stage fungicides for disease management.

Ipomoea batatas Ipomoea SIDEKICK ™ REC TRAY PRODUCT FORM ROOTING HORMONE MIST TIME

PINCH

PROP TIME BOTTOM HEAT

105-cell (30 mm) or larger

URC

Not recommended

CapSil ® (spray adjuvant) can be sprayed on the cuttings at a rate of 2–4 oz/100 gal within 1–2 days after sticking to help rehydrate the cuttings. Misting should be significantly reduced after 3–4 days and after cuttings become fully hydrated.

Recommended 3.5–4 weeks 70–74 °F (21–23 °C)

Comments: The use of plant growth regulators (PGRs) is generally not needed in propagation. Stick unrooted cuttings immediately to prevent dehydration. Plants are sensitive to chilling, so avoid storing cuttings <50 °F (10 °C).

Lantana camara Lantana BANDANA ® / BANDITO ™ REC TRAY PRODUCT FORM ROOTING HORMONE MIST TIME

PINCH

PROP TIME BOTTOM HEAT

105-cell (30 mm) or larger

URC, CC, AutoStix ®

Recommended

CapSil ® (spray adjuvant) can be sprayed on the cuttings at a rate of 2–4 oz/100 gal within 1–2 days after sticking to help rehydrate the cuttings. Misting should be significantly reduced after 3–4 days and after cuttings become fully hydrated.

Not recommended

4.5–5 weeks 72–74 °F (22–23 °C)

Comments: To control growth after rooting, a spray of B-Nine ® WSG (2,500 ppm) can be used. A tank-mix spray of Florel ® (350 ppm) + B-Nine ® WSG (2,500 ppm) can also be used to control growth and improve branching.

Lantana camara Lantana BANDOLERO ™ / BANDOLISTA ™ / HOT BLOODED ® REC TRAY PRODUCT FORM ROOTING HORMONE MIST TIME

PINCH

PROP TIME BOTTOM HEAT

105-cell (30 mm) or larger

URC, CC, AutoStix ®

Recommended

CapSil ® (spray adjuvant) can be sprayed on the cuttings at a rate of 2–4 oz/100 gal within 1–2 days after sticking to help rehydrate the cuttings. Misting should be significantly reduced after 3–4 days and after cuttings become fully hydrated.

Not recommended

4.5–5 weeks 72–74 °F (22–23 °C)

Comments: To control growth after rooting, a tank-mix spray of B-Nine ® WSG (2,500–3,500 ppm) + Altercel ™ (1,000 ppm) can be used. A tank-mix spray of Florel ® (350 ppm) + B-Nine ® WSG (2,500–3,500 ppm) can also be used to control growth and improve branching.

Lantana camara Lantana LANDSCAPE BANDANA ® REC TRAY PRODUCT FORM ROOTING HORMONE MIST TIME

PINCH

PROP TIME BOTTOM HEAT

105-cell (30 mm) or larger

URC, CC, AutoStix ®

Recommended

CapSil ® (spray adjuvant) can be sprayed on the cuttings at a rate of 2–4 oz/100 gal within 1–2 days after sticking to help rehydrate the cuttings. Misting should be significantly reduced after 3–4 days and after cuttings become fully hydrated.

Not recommended

4.5–5 weeks 72–74 °F (22–23 °C)

Comments: To control growth after rooting, a tank-mix spray of B-Nine ® WSG (2,500–3,500 ppm) + Altercel ™ (1,000 ppm) can be used. A tank-mix spray of Florel ® (350 ppm) + B-Nine ® WSG (2,500–3,500 ppm) can also be used to control growth and improve branching. Landscape Bandana Lantana varieties can be relatively vigorous and will typically need chemical growth control.

Lobelia erinus Lobelia TECHNO ® / TECHNO ® UPRIGHT REC TRAY PRODUCT FORM ROOTING HORMONE MIST TIME

PINCH

PROP TIME BOTTOM HEAT

105-cell (30 mm) or larger

URC, AutoStix ®

Not recommended

CapSil ® (spray adjuvant) can be sprayed on the cuttings at a rate of 2–4 oz/100 gal within 1–2 days after sticking to help rehydrate the cuttings. Misting should be significantly reduced after 2–3 days and after cuttings become fully hydrated.

Recommended 3.5–4 weeks 70–74 °F (21–23 °C)

Comments: To control growth after rooting, sprays of B-Nine ® WSG (1,500–2,500 ppm) is sufficient. A tank-mix spray of Florel ® (350 ppm) + B-Nine ® WSG (2,500–3,500 ppm) can also be used to control growth and improve branching. These Florel ® + B-Nine ® WSG combo sprays should be applied to actively growing plants. Do not spray B-Nine ® WSG or Florel ® + B-Nine ® WSG tank mixes on stressed or weak cuttings. For all sprays listed above, the mist should be off for a minimum of one hour for the plant growth regulator (PGR) to absorb into the leaf tissue.

Lysimachia nummularia Lysimachia GOLDII REC TRAY PRODUCT FORM ROOTING HORMONE MIST TIME

PINCH

PROP TIME BOTTOM HEAT

105-cell (30 mm) or larger

URC, AutoStix ®

Not recommended

CapSil ® (spray adjuvant) can be sprayed on the cuttings at a rate of 2–4 oz/100 gal within 1–2 days after sticking to help rehydrate the cuttings. Misting should be significantly reduced after 2–3 days and after cuttings become fully hydrated.

Recommended 4 weeks

70–74 °F (21–23 °C)

Comments: Goldii Lysimachia is a trailing plant that is typically pinched once in propagation to control growth. Transplant on time to avoid stretched growth and over-grown liners.

GROWER SUCCESS GUIDE 2024–2025

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