Sunflower ‘Double Dazzler’ Seeds

Sunflower ‘Double Dazzler’ Seeds

Botanical Name: Helianthus annuus

• Unique novelty sunflower with chrysanthemum-style blooms.
• Tall plants reaching approx. 170 cm in height.
• Strong main head followed by smaller secondary flowers.
• Very good vase life, ideal for cut flowers and bouquets.
• Approx. 75 days to flower in summer, 90 days in winter plantings.
• Eye-catching blooms suited to both gardens and commercial growers.
• Reliable performer when sown from spring through early autumn.

Plant Details:

• Plant Type: Warm-season annual
• Plant Height: Approx. 170 cm
• Flower Type: Novelty chrysanthemum-style sunflower
• Flowering Time: 75 days (summer), 90 days (winter)

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 resents transplanting
• Soil Type: Fertile, well-drained soil enriched with compost
• Spacing: 30–40 cm between plants; rows 60–75 cm apart

Growing Tips:

• Apply deep watering at longer intervals to promote strong taproot growth.
• Stagger sowings every 2–3 weeks for continuous harvests.
• Protect young seedlings from birds and snails.
• Mulch to retain soil moisture and reduce weeds.
• Cut flowers when primary blooms just begin to open for longest vase life.

Harvest:

Harvest around 75 days in summer or 90 days in winter. Primary heads can be cut for floristry; secondary flowers extend the harvest window.

When to Sow Sunflower ‘Double Dazzler’ in Your Climate

Find out more about how sunflowers support biodiversity here.

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