Kalettes in Zone 10a & 10b
Brassica oleracea
When to plant kalettes 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. Kalettes needs a head start most zones can't give it by direct-sowing alone.
| Start indoors | Dec 19–Dec 26 |
|---|---|
| Direct sow / transplant outside | Jan 16–Jan 23 |
| Estimated harvest | Apr 26–May 3 (~100 days after transplanting) |
Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 2-3 ft.
Kalettes is a trademarked cross between kale and Brussels sprouts, grown for small, frilly-leaved florets that look nothing like the tight round sprouts of its Brussels parent, with a milder, sweeter flavor to match.
How kalettes fits zone 10's season
Zone 10b's frost-free window runs about 324 days, from January 30 to December 20. Kalettes needs about 100 days from transplant to first harvest.
Good companions
No standout companions recorded yet for Kalettes.
Where to buy kalette seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing kalettes" 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 Kalettes in USDA zone 10b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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