Kalettes in Zone 9a & 9b
Brassica oleracea
When to plant kalettes in zone 9b
Zones 9a and 9b 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 | Jan 4–Jan 11 |
|---|---|
| Direct sow / transplant outside | Feb 1–Feb 8 |
| Estimated harvest | May 12–May 19 (~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 9's season
Zone 9b's frost-free window runs about 293 days, from February 15 to December 5. 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 9b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →
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Growing Kalettes in USDA zone 9b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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