PlantsFlowers

Cosmos

Cosmos (Cosmos bipinnatus)
Kryesmin · CC0
Cosmos in flower
In flower · (c) Irving Merino, some rights reserved (CC BY) · CC BY

Cosmos bipinnatus

Zone 6a garden plant. Hardy through a Chicago winter unless the note says to pot it.

Airy annual that shrugs off poor soil

EasyFlowers
Light
Full sun
Moisture
Dry–medium
Mature size
3–5 ft
Spacing
12 in
Bloom or harvest
Flowers Jul–frost
How it spreads
Annual
What to buy
Direct sow.
When to plant
Sow mid-May.

In the design

Rich soil makes leaves instead of flowers. Lean is better.

Plants that share this spot

More in this group

Reference details
Conservatism value
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Wetland indicator
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