🌸 Cosmos
Cosmos bipinnatus
ornamentals
annual
Asteraceae
☀️ Sun
full sun
💧 Water
low
🗺️ Zones
2-11
🧪 Soil pH
6.0-8.0
🪴 Soil Type
adaptable, even poor
🚿 Drainage
well-drained
📏 Spacing
12-18 in
📐 Height
2-5ft
⏱️ Maturity
70-90 days
Key:🤝 Grows well together❌ Keep apart☀️ Sun needs💧 Water🗺️ Hardiness zone
🤝 Companions (12)
🤝 Airy
Airy cosmos provides light shade for summer lettuce.
🤝 Attracts
Attracts pollinators that increase tomato fruit set.
Attracts parasitic wasps that control carrot pests
Good companion.
Cosmos attracts pollinators; dill hosts swallowtail caterpillars.
Strong pollinator attractant for cucurbit flowers
Good companion.
Good companion.
🤝 Tall
Tall airy backdrop with cosmos in front.
Good companion.
Good companion.
⚠️ Keep Apart (3)
Fennel's allelopathic compounds stunt cosmos growth
⚠️ Rich fertilized soil
Incompatible.
⚠️ Too much nitrogen = all leaves, few flowers.
Incompatible.
📝 Growing Notes
Thrives in poor soil , rich soil produces leaves not flowers. Self-seeds abundantly. Great for beneficial insects.
🛒 Buy Seeds & Plants
Baker Creek Heirloom Seeds
Johnny's Selected Seeds
Botanical Interests
True Leaf Market
Burpee
Territorial Seed Company
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