Delphina™ Light Blue White Bee Delphinium

Delphina™ Delphinium Culture Guide Germination

Excellent series of genetically compact delphiniums Germination time: 5–8 days allowing for less PGR use during production. Media temperature: 68–72 °F (20–22 °C)

Product form(s): Raw Chamber: Optional Habit: Upright Light: Not required for germination Container size: Quarts, gallons cover: Light vermiculite Blooming season: Late spring Moisture Level: 4 (wet) day 1–8 Vernalization: Not required; First-year flowering Recommended tray size: 128-cell tray per cell: 2–3 Garden Specifications Garden height: 14–18" Young Production Garden width: 6–10" TEMPERATURE: Light: Full to partial sun Day: 64–68 °F (18–20 °C) USDA Hardiness Zone: 4–7 Night: 64–68 °F (18–20 °C)

AHS Heat zone: 6–1 LIGHTING: Product use: Landscape beds, mass plantings, containers Recommended day length: Greater than 13 hours or 4-hour night interruption Light intensity: 2,000–3,000 foot candles (400–600 micro mols) Day length response: Facultative long day Daily light integral: Greater than 10 mols/day Media pH: 6.0– 6.5 Media EC: 0.5–1.0 mS/cm Fertilizer: 50–100 ppm Nitrogen Pinching: No Moisture level: Alternate between a level 4 (wet) and level 3 from radicle emergence until cotyledon expansion, then allow soil to dry back to a level 2 (medium). Plant growth regulators (PGRs): If needed, spray B-Nine® (daminozide) at 1,500–3,750 ppm or Bonzi® (paclobutrazol) at 3–5 ppm to tone plugs. Plug grow time: 7–8 weeks in a 128-cell size plug tray TM Tech Tips: Grow plugs at cool temperatures once germinated Delphina™ Dark Blue White Bee Delphinium for best quality. Finishing Moisture level: Alternate between a level 4 (wet) and level 2 (medium). Allow soil to dry to a level 2 (medium) before irrigating up to a level 4 (wet). TEMPERATURE: Plant growth regulators: If needed, spray applications of Bonzi at Day: 65–70 °F (18–21 °C) 10–15 ppm or Sumagic® (uniconazol) at 5–10 ppm are effective early in the crop cycle. Apply Bonzi drench at 2–3 ppm to hold size. Night: 55–65 °F (13–18 °C) Pests: Aphids, thrips, whiteflies Average daily temperature: 58–65 °F (14–18 °C) Diseases: Botrytis, Pythium, fungal spots LIGHTING:

Recommended day length: Greater than 13 hours or 4-hour night interruption Scheduling Light intensity: Greater than 4,500 foot candles (900 micro mols) Day length response: Facultative long day Crop time after Container size transplant (wks) per pot Daily light integral: Greater than 15 mols/day 1.0-quart pots 9–11 1 Vernalization: No (4.5- to 5-inch pots) Media pH: 6.0–6.5 1.25- to 2.5-quart pots 9–11 1–2 (5.5- to 6.5-inch pots, Media EC: 1.0–1.5 mS/cm trade gallon) 75–100 ppm Nitrogen Fertilizer: 3.0-quart to 2.0-gallon pots 9–11 2–3 Pinching: No (7.5- to 10-inch pots) Estimated finish crop time is from transplant of a 128-cell tray and finished at an average daily temperature (ADT) of 65 °F (18 °C).

EXAMPLE CROP SCHEDULE FOR 1-GALLON POTS Week 1: Sow two seeds per cell into 128 or similar plug tray. Week 2: Lower temperature to 60–65 °F (16–18 °C) once cotyledons have expanded. Week 4: PGR spray of Bonzi to tone plugs. Week 7: Transplant 1–2 plugs per pot for gallon-size pots and finish at 65 °F (18 °C) ADT. Week 12: PGR spray of B-Nine or Bonzi as needed to tone. Week 15: PGR drench of Bonzi to hold prior to ship if needed. Week 16–18: Finish

Delphina™ Rose White Bee Delphinium

Photos are either the property of Syngenta or used under agreement. © 2017 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 state or 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, Utility Patents, and/or Plant Breeders’ Rights and may not be propagated or reproduced without authorization. The trademarks displayed or otherwise used herein are the property of their respective owners.

SCP 833-00072-A