Aster in Zone 10b
Callistephus chinensis
Method: Start indoors — Start indoors from seed, then transplant outside — in your zone, Aster needs a head start on the heat that direct-sowing elsewhere doesn't require.
| Window | Fall window |
|---|---|
| Start indoors | Aug–Sep |
| Direct sow / transplant outside | Oct–Nov |
| Estimated bloom | ~95 days after transplanting |
Spacing: 1 per square foot (square-foot-gardening spacing).
Zone 10b dates sourced from growinginthegarden.com.
Good companions
No standout companions recorded yet for Aster.
Where to buy aster seeds
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See it growing
Search YouTube for "growing aster" videos → (a live search, not a hand-picked video — results vary and aren't vetted by us)
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