key growing information

Asian Greens Growing Information: How to Sow, Grow & Harvest

How to grow Asian greens from seed: sowing season, spacing for bunching, succession sowing, flea beetle control, and harvest stages for budding and heading types.

By Hensley’s Seed Co. September 3, 2026

Asian Greens - Key Growing Information

A bunch of freshly harvested Asian greens, including tatsoi, mizuna, pac choi, and others.

CULTURE:

Plant from early spring into midsummer. In mild climates, or when overwintering in a high tunnel or similar shelter, sowings can continue into late fall.

DAYS TO MATURITY:

Counted from the direct-sowing date. DIRECT SEEDING: For full-size bunching greens, plant 1/4" deep at about 15 seeds per foot (10–12 per foot for 'Green 70 D Improved') in rows 12–18" apart. Most varieties need no thinning; the few that do are noted on their product pages. To grow 'Tokyo Bekana' as baby leaf, follow the Baby Leaf Brassica Greens culture.

AVG. DIRECT SEEDING RATE:

For bunching at the spacing above: about 830' per oz. and 13,000' per lb. SUCCESSION PLANTING: Plant every 7–10 days to keep both budding/cutting and heading types coming.

INSECT PESTS:

Floating row covers laid over the bed at sowing is the best defense against flea beetles.

HARVEST:

Budding and cutting types (choi sum, kailaan): pick when buds are fully formed or just a few flowers have opened; these types give several cuttings. Heading types (celtuce, Chinese cabbage, komatsuna): harvest anywhere from medium to full size, depending on what your customers prefer; these are cut once.

SEEDS/OZ. (AVG.):

12,650.

PACKET:

Packets hold 250 seeds unless noted, enough for about 16' of full-size plants.