2025 Seed Annuals | AMS | Culture Guides

SEED

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Sunfinity ® Yellow-Red Bicolor

Helianthus Sunfinity ® Culture Guide Helianthus annuus Product form: Seed Containers: 2.5–3 quart, 1.5 gallon and larger patio containers Habit: Upright

Seed Germination Germination time: 5–6 days, with full germination in 10–14 days Media temperature: 68–72 °F (20–22 °C)

Chamber: Optional Light: Not required

Seed cover: Cover seed with a thin layer of media or coarse-grade vermiculite. Maintaining an even, consistent seed coverage is key to achieve uniform germination. Moisture level: 4 (wet) until germination is complete. 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. Recommended tray size: 128- to 50-cell plug tray, 72-cell recommended Seeds per cell: 1

Garden Specifications Garden height: 36–48" (90–120 cm) tall Garden width: 24–28" (60–70 cm) wide Exposure: Full Sun USDA zone: 11 AHS zone: 12–1 Product use: Beds and large containers

Seed Young Plant Production Temperature

Day: 65–68 °F (18–20 °C) Night: 65–68 °F (18–20 °C) Lighting Recommended day length: Long days; minimum of 14 hours for fastest finish Light intensity: 700–900 µmol·m -2 ·s -1 Day length response: Facultative long day Daily light integral (DLI): 12–16 mol·m -2 ·d -1 Media pH: 5.5–5.8 Media EC: SME EC: 1.0–1.5 mS/cm or Press/Squeeze Method EC: 1.5-2.25 mS/cm Fertilizer: 75–125 ppm N Plant growth regulators (PGRs): A Bonzi ® (paclobutrazol) sprench within 48 hrs of sowing is recommended with concentrations of 2–3 ppm for spring programs, and drenches recommended during summer sowings for additional control of vigor. Sprench volumes being 3–5 quarts per 100 sq ft. Foliar B-Nine ® WSG spray at 2,500 ppm can be applied 3 weeks after sowing in especially warm propagation conditions for added control. Plug time: 4 weeks in a 72-cell plug tray

Sunfinity ® Yellow Dark Center

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