Double Dutch White Cosmos Seeds - Cosmos Bipinnatus, 50 seeds

Quantity: 50 Seeds / pack

Double Dutch White is a cosmos (Cosmos bipinnatus) with fully double white blooms — a fluffier look than single cosmos, on airy plants with fine, fern-like foliage. It is easy from seed, blooms from mid-summer until frost, and makes an excellent cut flower.

Why choose our seeds?

• Fully double white blooms on airy, fern-like plants
• Blooms from mid-summer until frost
• Excellent, easy cut flower

How to grow Double Dutch White Cosmos seeds

Choose Your Planting Method

• Indoors: Start indoors 4-6 weeks before your last frost date.
• Outdoors: Direct sow after all danger of frost has passed — direct sowing is the simplest and most reliable method.

Prepare Your Materials

• Seed-starting trays or pots (if indoors)
• Well-draining potting mix
• Spray bottle for misting

Sowing the Seeds

• Sow about 1/8-1/4 inch deep and cover lightly with soil.
• Keep the soil evenly moist until seedlings emerge.

Provide the Right Conditions

• Light: Full sun.
• Temperature: 68-72°F (20-22°C) for germination; soil around 60-65°F (16-18°C) for direct sowing.

Germination

• 7-10 days in warm soil (up to about 3 weeks outdoors in cooler weather).
• Thin seedlings to the strongest plants once they are a few inches tall.

Transplanting

• If started indoors, transplant after the last frost while seedlings are still small.
• Spacing: 9-12 inches apart

Care Tips

• Sun: Full sun.
• Water: Water to establish; cosmos handle dry spells once growing but bloom best with regular moisture.
• Fertilizer: Go easy on fertilizer — rich soil and heavy feeding produce leaves at the expense of flowers.
• Deadhead regularly to prolong flowering.
• Pinch the growing tips of young plants to encourage branching and more blooms.

Bloom Time:

Mid-summer until frost.