Osteospermum in Zone 10a & 10b
Osteospermum ecklonis
When to plant osteospermum 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. Osteospermum needs a head start most zones can't give it by direct-sowing alone.
| Start indoors | Dec 5–Dec 12 |
|---|---|
| Direct sow / transplant outside | Feb 6–Feb 13 |
| Estimated bloom | May 7–May 14 (~90 days after transplanting) |
Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 1-3 ft.
Two different plants are sold as African daisy, and knowing which you have decides how you treat it.
How osteospermum fits zone 10's season
Zone 10b's frost-free window runs about 324 days, from January 30 to December 20. Osteospermum needs about 90 days from transplant to first harvest.
Good companions
No standout companions recorded yet for Osteospermum.
Where to buy osteospermum seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing osteospermum" 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 Osteospermum in USDA zone 10b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.
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