
Brassica rapa subsp. nipposinica
A fast-growing Japanese mustard green that does best in cool UK conditions. Sow a little at a time from spring to late summer for a steady run of leaves, and protect young plants from slugs and flea beetle in dry weather.
Step-by-step instructions for growing Mizuna
Change the guide to see different planting timelines and tips.
Sow small batches outside for a long season of cut-and-come-again leaves. This is the usual UK way to grow mizuna in beds or containers.
Sow thinly around 23 Feb - 16 Aug in shallow drills or scatter into prepared soil, then cover with a light layer of fine compost. Sow a fresh batch every 21 days for a steady supply of young leaves.
When the seedlings are large enough to handle, thin them so the strongest plants are left at apart. Snip extras off at soil level rather than pulling them up, so you don't disturb the roots of the plants you want to keep.
Check plants from 28th May for slug and snail damage, and use fleece or mesh if flea beetle is pinholing the leaves. Keep the bed clear of weeds and water in the morning so growth stays steady.
From 4th June, keep the soil evenly moist so the leaves stay tender and the plants do not run to seed in dry spells. Water at the base and avoid soaking the foliage late in the day.
Start picking from 20th June once the plants are well rooted, taking outer leaves first or cutting whole plants just above the crown. Keep harvesting little and often, because regular picking encourages fresh growth through 20th June - 25th December.
Tap a plant to see why it works (or doesn't) with Mizuna.
Companion planting can deter pests, improve pollination, and make better use of space. Some plants confuse pests or attract beneficial insects; others improve soil or offer shade to neighbours that need it.
Popular varieties of Mizuna to consider
The standard green form, with finely cut leaves and a mild mustard flavour.
A red-tinged selection with the same quick growth and peppery bite.
A common green mizuna type, valued for its neat leaf shape and steady cutting.
A darker ornamental strain that is still good to eat when picked young.