Growing Cosmos
Feathery and airy, cosmos fills gaps in the garden and keeps blooming until frost.
How to Grow Cosmos
Planting
Direct sow after last frost, cosmos actually blooms best in leaner soil, too much fertilizer gets you a lot of foliage and few flowers.
Watering & feeding
Light and infrequent once established, they handle our summer heat and dry spells well.
Harvest
Cut often for bouquets, the more you cut, the more they bloom.
Grows Well With
Plant cosmos near tomatoes and squash, their airy height doesn’t shade out neighbors and they draw in pollinators all summer. See all our companion planting pairs →
When to Plant
Direct sow April through June. A summer sowing will still bloom right up until first frost in November. See the full planting calendar →
Buy the Seeds We Use
From the Seed Center
Shop Cosmos Seeds
$1.50
From the Kitchen: Recipes Using Cosmos
Looking for recipe ideas? Browse the full Recipe Book.