Gaillardia (Blanket Flower) in Zone 10a & 10b
Gaillardia x grandiflora
When to plant gaillardia (blanket flower) in zone 10b
Zones 10a and 10b share the same average frost dates in our data, so this page covers both.
Method: Either: Start indoors for an earlier harvest, or direct-sow outside for less fuss. Gaillardia (Blanket Flower) tolerates either.
| Window | Fall window |
|---|---|
| Start indoors | Not typically started indoors |
| Direct sow / transplant outside | Sep–Nov |
| Estimated bloom | Nov 20–Feb 18 '27 (~80 days after planting) |
| Window | Spring window |
|---|---|
| Start indoors | Not typically started indoors |
| Direct sow / transplant outside | Jan–Apr |
| Estimated bloom | Mar 22–Jul 19 (~80 days after planting) |
Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 1-1.5 ft.
Zone 10b dates sourced from growinginthegarden.com.
Gaillardia (blanket flower) is one of the few heat-tolerant annuals here that stays put instead of sprawling across the bed. It forms a tidy 10-15 inch mound and just keeps blooming through the kind of summer heat that shuts down less tolerant flowers.
How gaillardia (blanket flower) fits zone 10's season
Zone 10b's frost-free window runs about 324 days, from January 30 to December 20. Gaillardia (Blanket Flower) needs about 80 days from sowing to first harvest.
Good companions
No standout companions recorded yet for Gaillardia (Blanket Flower).
Where to buy gaillardia seeds
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See it growing
Search YouTube for "growing gaillardia (blanket flower)" 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 Gaillardia (Blanket Flower) in USDA zone 10b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.
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