Sunflower SunFill™ Green F1 | Helianthus annuus | Sunflower for Florists

Sunflower ‘SunFill™ Green F1’ | Helianthus annuus | Unique Green Geometric Sunflower for Florists

Helianthus annuus ‘SunFill Green F1’ is an innovative, pollen-free sunflower variety bred especially for professional cut flower production. Created by American breeder Tom Heaton, this remarkable sunflower highlights the beauty of the flower’s reverse side — featuring ornamental green and purple sepals that wrap around the bloom to form a striking, geometric shape perfect for modern floral design.

The flower heads measure 7–10 cm across and have a strong, structured appearance, making them an excellent textural filler for bouquets and arrangements. Unlike traditional yellow sunflowers, ‘SunFill Green’ features sculptural green centers that blend into purple tones — a bold, elegant look for contemporary floristry.

This single-stem, pollenless variety grows rapidly and reaches 150–180 cm in height, producing strong, upright stems ideal for cutting. For best results, harvest before the inner petals begin to open to preserve the unique geometric form.

Plant Details

• Botanical name: Helianthus annuus ‘SunFill™ Green F1’
• Common name: Sunflower
• Series: SunFill™
• Family: Asteraceae
• Plant type: Annual
• Stem length: 150–180 cm
• Flower diameter: 7–10 cm
• Days to maturity: 50–55 days
• Growth habit: Single stem, upright
• Pollen: None (pollen-free)
• Color: Green fading to Green
  
• Fragrance: None

Growing Information

• Sowing period: Mid-spring to mid-summer
• Cultivation location: Open field or greenhouse
• Plant density: 32–40 plants per m²
• Temperature: Prefers 18–24°C
• Germination time: 7–10 days
• Time from sowing to transplant: About 14 days
• Time from transplant to bloom: 50–55 days
• Position: Full sun or light partial shade
• Soil: Fertile, well-drained soil

Care and Harvest

• Keep soil evenly moist but never waterlogged
• No pinching required – single strong stem habit
• Harvest when inner petals are still closed for best form and vase life
• Regular cutting encourages continuous flowering
• Excellent choice for creative, modern flower arrangements

Why Grow ‘SunFill Green F1’?

• Distinctive geometric, sculptural flowers
• Unique green-to-Green coloration
• Pollen-free, ideal for floristry and allergy-friendly designs
• Strong stems (150–180 cm) perfect for cutting
• Fast-growing and easy to cultivate
• Adds structure, texture, and modern style to any arrangement