Mizuna is becoming increasingly popular, it makes a rosette of finely cut leaves and can be harvested over a long season, at any stage, from small seedlings to large plants, a few leaves at a time. The flowering shoots are also edible.
Sow outdoors thinly from March to August, where they are to crop, 1.5cm deep, directly into prepared, fertile, well-drained soil, which has been watered. For cut and come again baby leaves, allow 15cm between rows, or sow thinly, directly into 25cm pots. Early sowings may benefit from cloche protection. Seedlings usually appear in 7-14 days. No further thinning should be necessary. Keep moist. Regular sowings, made every two to three weeks, will ensure a continuous supply of leaves. Pick a few from each plant when approx. 10cm high. They will regrow for up to 4 'cuts.' For mature leaves, allow 25cm between rows and thin to 20cm apart. Harvest whole plants from May. Generally, the larger the leaf, the hotter it will become.