Celosia in Zone 10a & 10b
Celosia argentea
When to plant celosia in zone 10b
Zones 10a and 10b share the same average frost dates in our data, so this page covers both.
Method: Start indoors: Start indoors from seed, then transplant outside. In your zone, Celosia needs a head start on the heat that direct-sowing elsewhere doesn't require.
| Window | Spring window |
|---|---|
| Start indoors | Feb–Apr |
| Direct sow / transplant outside | Apr–Jun |
| Estimated bloom | Jun 20–Sep 18 (~80 days after transplanting) |
Spacing: 2 per square foot (square-foot-gardening spacing). Mature height: 1-2.5 ft.
Zone 10b dates sourced from growinginthegarden.com.
Celosia is a dense, upright bloomer (either the crested "brain" type or the feathery plume type) that handles heat and drought well once it's up and growing, making it one of the more forgiving flowers on this list.
How celosia fits zone 10's season
Zone 10b's frost-free window runs about 324 days, from January 30 to December 20. Celosia needs about 80 days from sowing to first harvest.
Good companions
No standout companions recorded yet for Celosia.
Where to buy celosia seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing celosia" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 10b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →
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Growing Celosia in USDA zone 10b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.
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