Flower Sprouts in Zone 11a & 11b
Brassica oleracea
When to plant flower sprouts in zone 11b
Zones 11a and 11b share the same average frost dates in our data, so this page covers both.
Method: Start indoors: Start indoors from seed, then transplant outside. Flower Sprouts needs a head start most zones can't give it by direct-sowing alone.
| Start indoors | Nov 20–Nov 27 |
|---|---|
| Direct sow / transplant outside | Dec 18–Dec 25 |
| Estimated harvest | Mar 28 '27–Apr 4 '27 (~100 days after transplanting) |
Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 2-3 ft.
Flower Sprouts is a separately trademarked kale x Brussels sprouts cross from a different breeding line than Kalettes, though the two are similar in concept: small, ruffled, purple-and-green florets running up a tall stalk instead of the tight round sprouts of a standard Brussels plant.
How flower sprouts fits zone 11's season
Zone 11b is frost-free in this dataset, so frost is not what limits the calendar here. What you can plant, and when, comes down to summer heat and daylength instead.
Good companions
No standout companions recorded yet for Flower Sprouts.
Where to buy flower sprout seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing flower sprouts" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 11b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →
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Growing Flower Sprouts in USDA zone 11b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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