Lavatera (Annual Mallow) in Zone 10a & 10b
Lavatera trimestris
When to plant lavatera (annual mallow) in zone 10b
Zones 10a and 10b share the same average frost dates in our data, so this page covers both.
Method: Direct sow: Direct-sow outside. Lavatera (Annual Mallow) doesn't transplant well, or doesn't need the extra time indoors.
| Start indoors | Not typically started indoors |
|---|---|
| Direct sow / transplant outside | Jan 30–Feb 6 |
| Estimated bloom | Apr 30–May 7 (~90 days after direct-sowing) |
Spacing: about 4 square feet per plant (square-foot-gardening spacing). Mature height: 2-4 ft.
Lavatera is the annual mallow, and the one that flowers properly in its first summer.
How lavatera (annual mallow) fits zone 10's season
Zone 10b's frost-free window runs about 324 days, from January 30 to December 20. Lavatera (Annual Mallow) needs about 90 days from sowing to first harvest.
Good companions
No standout companions recorded yet for Lavatera (Annual Mallow).
Where to buy lavatera seeds
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See it growing
Search YouTube for "growing lavatera (annual mallow)" 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 Lavatera (Annual Mallow) in USDA zone 10b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.
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