Sunflower ‘Supernova’ F1 Hybrid Seeds

Sunflower ‘Supernova’ F1 Hybrid Seeds

Botanical Name: Helianthus annuus

• Market-leading commercial cut flower sunflower variety.
• Rich gold–orange petals with a bold, dark central disc.
• Pollen-free blooms for clean, long-lasting arrangements.
• Excellent vase life, making it ideal for floristry and markets.
• Uniform, strong plants reaching approx. 160 cm tall.
• Flowers quickly—ready just 7–8 weeks from planting.
• Perfect for sowing spring through to early autumn.

Plant Details:

• Plant Type: Warm-season annual
• Plant Height: Approx. 160 cm
• Flower Size: Medium–large blooms with gold-orange petals
• Pollen: Pollen-free

Sowing Information:

• Sow When:
  • Temperate: September–January
  • Subtropical: August–February
  • Tropical: March–September (avoid peak wet)
  • Cool: October–December
  • Arid: September–January (with irrigation)
• Germination: 7–10 days @ 18–25°C
• Depth: 10–15 mm
• Position: Full sun
• Sow Where: Direct sow—taproot does not like disturbance
• Soil Type: Fertile, well-drained soil enriched with compost
• Spacing: 30–40 cm between plants; rows 60–75 cm apart

Growing Tips:

• Water deeply at longer intervals to encourage strong taproots.
• Stagger plantings every 2–3 weeks for continuous cut flower supply.
• Protect seedlings from birds and snails.
• Mulch to conserve moisture and suppress weeds.
• Harvest when petals begin to unfurl for maximum vase life.

Harvest:

Harvest around 7–8 weeks after sowing. For cut flowers, pick when blooms are just opening. Leave some to mature fully for birds and pollinator support.

When to Sow Sunflower ‘Supernova’ in Your Climate

Find out more about how sunflowers support biodiversity here.

Click here to find our detailed Sunflower Grow Guide for Australia.