Culture guidelines for growing Painted Love vegetative petunia
Painted Love™ Purple
Petunia Painted Love ™ Culture Guide Petunia hybrida Product form: Vegetative Containers: Quarts, Gallons, Hanging Baskets Habit: Mounding, Trailing/Spreading Garden Specifications Garden Height: 10–14” (25–35 cm) tall Garden Width: 20–24” (50–60 cm) wide Exposure: Full Sun USDA zone: 9–11 AHS zone: 11–2 Product use: Containers, Hanging Baskets, Landscapes, Patio Pots, Combos Propagation of Unrooted Cuttings Root emergence: 6–8 days Rooting hormone: Not recommended Bottom heat temp: 72–74 °F (22–23 °C) for the first three weeks. After roots are well developed, temperatures can be lowered to hold and tone the cuttings.
Misting: Mist schedules vary depending on light and temperature conditions. Apply just enough moisture to rehydrate the cuttings and keep them from wilting. Cuttings should be hydrated and in a non-wilted stage within 24 hours after sticking. Cuttings that continue to wilt heavily after 24 hours will callus unevenly and will be delayed in rooting. 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 in rehydration of the cuttings. Misting should be significantly reduced after 2–3 days and after cuttings become fully hydrated. Petunias are particularly sensitive to over- misting. Petunias root quickly and applying too much mist can lead to chlorotic and deformed foliage and growing tips. Rec. tray size: 105-cell tray (30 mm) or larger Propagation timing: 3–3.5 weeks for a 105-cell tray; add more rooting time for significantly larger tray sizes. Temperature Day: 72–74 °F (22–23 °C) Night: 72–74 °F (22–23 °C) Lighting Day extension lighting: Beneficial Light intensity: 200–250 µmol·m -2 ·s -1 for the first two weeks after sticking or until root development occurs. Light levels can be increased up to 600 µmol·m -2 ·s -1 as rooting increases and the cutting matures. Day length response: Facultative long day Daily light integral (DLI): 4–6 mol·m -2 ·d -1 for the first two weeks after sticking or until root development occurs. DLI can be increased to greater than 12 mol· m -2 ·d -1 after root formation. Media pH: 5.6–6.0 Media EC: SME EC: 0.9–1.3 mS/cm, PourThru EC: 1.4–2.0 mS/cm Fertilizer: Begin fertilization at 100 ppm nitrogen when roots become visible. Rates can be increased up to 200 ppm nitrogen after roots become well developed. Use primarily Cal-Mag ® Plus (calcium nitrate + magnesium nitrate) fertilizers in propagation to prevent unwanted stretch. Supplemental feeding with additional iron (ex. iron chelate) will help prevent iron deficiency and leaf tip chlorosis. Pinching: Not recommended
Painted Love ™ Purple
Plant growth regulators (PGRs): Petunia Painted Love ™ has good vigor and generally will need chemical growth regulation in propagation. To control growth after rooting, sprays of B-Nine ® WSG (2,500-3,500 ppm) are usually sufficient. A tank-mix spray of Florel ® (350 ppm) + B-Nine ® WSG (2,500 ppm) can also be used to control growth and improve branching. Do not spray Florel ® on stressed or weak cuttings. For all sprays listed above, the mist should be off for a minimum of one hour for the PGR to absorb into the leaf tissue.
Tech tip: Keep media pH in the mid 5’s to avoid iron deficiency and tip chlorosis. Temperatures can be lowered three weeks after planting and especially towards the end of production to tone or hold the plant. High DLIs and cool finishing temperatures produce high-quality petunias. Moisture level: Media should be allowed to dry between irrigations. Alternate between moisture level 2 and 4. 2 - MEDIUM: Soil is light brown in color, no water can be extracted from soil, and soil will crumble apart. 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. Common pests: Aphids, thrips, budworms, leafminers, white flies Common diseases: Botrytis , powdery mildew, Viruses (TMV, TSWV)
Finishing
Temperature Day: 70–72 °F (21–22 °C) Night: 62–64 °F (17–18 °C) Average daily temperature: 67 °F (19.5 °C) Lighting Day extension lighting: Beneficial to 14 hours Light intensity: 800–1,200 µmol·m -2 ·s -1 Day length response: Facultative long day Daily light integral (DLI): 16–18 mol·m -2 ·d -1
Scheduling
SIZE
CROP TIME PLANTS PER POT
1.0 quart (4.5 to 5 inch)
5–6 weeks
1 ppp
1.25 to 2.5 quart (5.5 to 6.5 inch, trade gallon) 3.0 quart to 2.0 gallon (7.5 to 10 inch) 1.5 gallon hanging basket (10 inch basket) 2.0 gallon hanging basket (12 inch basket) 3.0 gallon hanging basket (14 inch basket)
7–9 weeks
1 ppp
Transplanting: Transplant directly into the finished container. Place the rooting media slightly below the level of media in the container. Make sure that the root ball is covered and that the liner is situated in the center of the pot. Media pH: 5.5–5.9 Media EC: SME EC: 2.3–2.8 mS/cm, PourThru EC: 3.5–4.2 mS/cm Fertilizer: 200–250 ppm N Pinching: Yes, 1 pinch is recommended 7-10 days after transplant. A second pinch can be given to plants grown in large baskets and containers. This second pinch can occur shortly before a final Bonzi ® drench. Use proper sanitation when pinching or shearing petunia. Petunia and other solanaceous crops are highly susceptible to the Tobacco Mosaic Virus (TMV), which can be easily transmitted by mechanical means. Plant growth regulators (PGRs): Petunia Painted Love ™ has good vigor and generally will need chemical growth regulation. Sprays of B-Nine ® WSG (2,500–5,000 ppm) or Sumagic ® (20–30 ppm) can be used to control growth. A tank-mix spray of Florel ® (350–500 ppm) + B-Nine ® WSG (2,500 ppm) can also be used to control growth and improve branching early in production. A Bonzi ® drench (2–4 ppm) can be given 3–4 weeks before finishing and results in toned, high quality plants.
8–9 weeks
2–3 ppp
9–10 weeks 3 ppp
9–10 weeks 4 ppp
9–10 weeks 5 ppp
Estimated finish crop time is from transplant of a 105-cell tray and finished at the recommended average daily temperature of 67 °F (19.5 °C). Example crop schedule for a 1.5 gallon hanging basket
WEEKS FROM TRANSPLANT
DESCRIPTION
Provide an average daily temperatures of 68 °F (20 °C) and DLI levels above 15 mol·m -2 ·d -1 . Pinch plants when they are rooted into the pot. Apply a tank-mix spray of Florel ® (350 ppm) + B-Nine ® WSG (2,500 ppm) or Bonzi ® drench (1–2 ppm) to control growth and improve branching. Evaluate plants and apply a Bonzi ® drench at 3 ppm to maintain a compact, controlled growth. Drop temperature if needed to help control growth.
1 week
2 weeks
5 weeks
Try Chrysal Alesco ® , a postharvest foliar spray, to protect ethylene sensitive crops during shipping and retail.
9 weeks
Finish
All photos are either the property of Syngenta or are used with permission. © 2023 Syngenta. Important: Always read and follow label instructions. Some products may not be registered for sale or use in all states or counties. Please check with your local Extension Service to ensure registration status. Some or all of the varieties may be protected under one or more of the following: Plant Variety Protection, United States Plant Patents and/or Utility Patents and may not be propagated or reproduced without authorization. The trademarks or service marks displayed or otherwise used herein are the property of a Syngenta Group Company. All other trademarks are the property of their respective third-party owners.
Page 1 Page 2Made with FlippingBook Learn more on our blog