Mizuna in Zone 9a & 9b
Brassica rapa var. nipposinica
When to plant mizuna in zone 9b
Zones 9a and 9b share the same average frost dates in our data, so this page covers both.
Method: Direct sow: Direct-sow outside. Mizuna doesn't transplant well, or doesn't need the extra time indoors.
| Start indoors | Not typically started indoors |
|---|---|
| Direct sow / transplant outside | Jan 25–Feb 1 |
| Estimated harvest | Mar 6–Mar 13 (~40 days after direct-sowing) |
Spacing: 9 per square foot (square-foot-gardening spacing). Mature height: 0.5-1 ft.
Mizuna is a feathery-leaved Japanese mustard green prized for its mild, slightly peppery flavor and quick turnaround, one of the fastest crops you can put in a salad-garden bed.
How mizuna fits zone 9's season
Zone 9b's frost-free window runs about 293 days, from February 15 to December 5. Mizuna needs about 40 days from sowing to first harvest.
Good companions
No standout companions recorded yet for Mizuna.
Where to buy mizuna seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing mizuna" 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 Mizuna in USDA zone 9b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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