Yarrow in Zone 10a
Achillea millefolium
Method: Start indoors — Start indoors from seed, then transplant outside — in your zone, Yarrow needs a head start on the heat that direct-sowing elsewhere doesn't require.
| Window | Fall window |
|---|---|
| Start indoors | Aug–Jan |
| Direct sow / transplant outside | Oct–Mar |
| Estimated bloom | ~100 days after transplanting |
Spacing: 1 per square foot (square-foot-gardening spacing).
Zone 10a dates sourced from growinginthegarden.com.
Good companions
No standout companions recorded yet for Yarrow.
Where to buy yarrow seeds
Some links on this page go to retailers we may eventually earn a commission from as an affiliate, at no extra cost to you. We only recommend products with a genuine consensus of positive, independent reviews — see the sources cited on each item.
See it growing
Search YouTube for "growing yarrow" videos → (a live search, not a hand-picked video — results vary and aren't vetted by us)
← Back to the full zone 10a calendar · Full companion planting guide · Plan your beds in the Garden Designer →