Komatsuna
Komatsuna (Brassica rapa var. perviridis) is a plant. It grows best in full sun and has moderate water needs.
About Komatsuna
Komatsuna is a biennial plant that grows 50 cm tall. It grows fast. It is self-fertile, so you only need one.
The flowers give nectar and pollen to pollinators.
How to plant komatsuna
Komatsuna does best in full sun, but also copes with part shade. It grows in sandy soil, loam and clay, as long as the soil is well drained. It does best at a pH of 6–6.8. In a forest garden it belongs in the herb layer.
Plant plants 10 cm apart, at least 5 cm. It struggles in compacted soil, so keep the soil loose.
A year with Komatsuna
Spring. Water during dry spells in March. Sow seed in April–September. Keep the ground around it weed-free in April and May. Feed it in April. Use a balanced fertiliser. Harvest falls in May. The leaves can be eaten. The flowers can be eaten too. Recorded from the source text, not a safety check. Confirm with a trusted guide before eating anything. Water during dry spells in May–September.
Summer. It has yellow flowers in June.
Autumn. Protect it from frost and cold in September–November. Harvest falls in November and December.
Winter. Sow seed in February.
Pests and diseases
Komatsuna can be attacked by small white butterfly (pieris rapae) and slugs. Diseases include clubroot and downy mildew.
Companions and wildlife
KomatsunaThe family
Komatsuna is a variety of Turnip, in the genus Brassica. Open a species to see what lies under it.
Komatsunavar. perviridisThis page
Sources
Added to the wiki 12 October 2026
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