Broccolini in Zone 9a & 9b
Brassica oleracea var. italica x alboglabra
When to plant broccolini 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. Broccolini needs a head start most zones can't give it by direct-sowing alone.
| Start indoors | Jan 11–Jan 18 |
|---|---|
| Direct sow / transplant outside | Feb 15–Feb 22 |
| Estimated harvest | Apr 11–Apr 18 (~55 days after transplanting) |
Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 1.5-2 ft.
Broccolini is a cross between broccoli and gai lan, both of which this site already covers separately. It is worth its own square because you harvest it on a completely different rhythm.
How broccolini fits zone 9's season
Zone 9b's frost-free window runs about 293 days, from February 15 to December 5. Broccolini needs about 55 days from transplant to first harvest.
Good companions
No standout companions recorded yet for Broccolini.
Where to buy broccolini seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing broccolini" 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 Broccolini in USDA zone 9b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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