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  1. Products
  2. Seeds
  3. Garden Seed

Cosmos (Sea Shells Blend)

$2.69 $1.35 50% off Botanical Interests and Lake Valley Seeds


Item # 736210107344

An image of Cosmos (Sea Shells Blend)

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Botanical Interests Heirloom Sea Shells Blend Cosmos Seeds

These charming cosmos with fluted, seashell-shaped petals will be a beautiful addition to your flower patch! In shades of white, pink, rose, and crimson, they make an excellent cut flower. Easy to care for; once established they are drought tolerant. They prefer neglect over attention, making them a perfect choice for wildflower or naturalized areas.

Sowing Information:

  • Light: Full sun
  • When to Start Inside: 4 to 6 weeks before your average last frost date.
  • When to Sow Outside: RECOMMENDED. 1 to 2 weeks after your average last frost date, and when the soil temperature is at least 60°F.
  • Seed Depth: Barely cover
  • Seed Spacing: A group of 3 seeds every 12 inches
  • Thinning: When 1-2  inches tall, thin to 1 every 12 inches
  • Days to Emerge: 5–10 days
  • Blooms: Summer to frost

Growing Notes:

  • Harvesting: For the longest vase life, harvest in the morning and cut stems just as flower buds begin to open.
  • Hardiness: Annual
  • Attributes: Attracts hummingbirds, attracts pollinators, cut flower, drought-tolerant, deer resistant


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- Nick, April 2023

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"My favorite nursery in Fort Collins. High quality plants and flowers. Every gardening accessory you can think of. Tons of gifts for gardeners and crafty people in your life."

- Kelly Ridgley, April 2025