Tendergreen has smooth leaves and makes a fine spinach substitute, especially in the fall. Seeds germinate and grow quickly in late summer heat and mature to tender sweetness in cool weather. Thinnings are delicious as fresh snacks or in salads. Heat and drought resistant.
Sow in average well-worked soil, in full sun in early spring; midsummer for fall crop. In frost-free areas, Sow from fall to early spring. For continuous harvest, sow mustard seeds every 14 days until weather becomes hot. Mustard plants grown in hot weather can have a bitter taste, so grow during the cooler months. In rows 24" apart, plant seeds evenly and thinly and cover with 1/2" of fine soil. Firm lightly. Seedlings emerge in 10-21 days.
How to Grow Mustard
Plants emerge in 10-21 days. Thin to about 12" apart when seedlings are 1-2" high. Keep plants well-watered in extended periods of warm or dry weather. Do not plant cabbage family crops in the same place 2 years in a row.
Harvest young foliage when it reaches 6-8" long, about 45 days after sowing. Pick the lower leaves or harvest the entire plant at once, before foliage becomes tough. For fall planted mustard, picking after a light frost is best since frost improves flavor. Mizuna can be maintained as a season-long cutting crop like parsley. Mustard greens are great for salads or as cooked greens. You can also boil or saut¿ the foliage.