Coreopsis (Tickseed) in Zone 10b
Coreopsis grandiflora
Method: Start indoors — Start indoors from seed, then transplant outside — in your zone, Coreopsis (Tickseed) needs a head start on the heat that direct-sowing elsewhere doesn't require.
| Window | Spring window |
|---|---|
| Start indoors | Jan–Mar |
| Direct sow / transplant outside | Mar–May |
| Estimated bloom | ~80 days after transplanting |
| Window | Fall window |
|---|---|
| Start indoors | Aug–Sep |
| Direct sow / transplant outside | Oct–Nov |
| Estimated bloom | ~80 days after transplanting |
Spacing: 1 per square foot (square-foot-gardening spacing).
Zone 10b dates sourced from growinginthegarden.com.
Good companions
- Pepper — Draws in pollinators and beneficial insects like lady beetles near heavy-feeding vegetables.
Where to buy coreopsis (tickseed) seeds
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See it growing
Search YouTube for "growing coreopsis (tickseed)" videos → (a live search, not a hand-picked video — results vary and aren't vetted by us)
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