Komatsuna in Zone 10a & 10b

Brassica rapa var. perviridis

When to plant komatsuna in zone 10b

Zones 10a and 10b share the same average frost dates in our data, so this page covers both.

Method: Direct sow: Direct-sow outside. Komatsuna doesn't transplant well, or doesn't need the extra time indoors.

Start indoors	Not typically started indoors
Direct sow / transplant outside	Jan 16–Jan 23
Estimated harvest	Feb 25–Mar 4 (~40 days after direct-sowing)

Spacing: 4 per square foot (square-foot-gardening spacing). Mature height: 1-1.5 ft.

Komatsuna is a fast, mild-flavored Asian brassica green, notably more heat- and cold-tolerant than spinach while offering a similar leaf texture and taste, which makes it a useful stand-in during the stretches of the season spinach won't tolerate.

How komatsuna fits zone 10's season

Zone 10b's frost-free window runs about 324 days, from January 30 to December 20. Komatsuna needs about 40 days from sowing to first harvest.

Good companions

No standout companions recorded yet for Komatsuna.

Where to buy komatsuna seeds

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