Vegetable SeedsHSC-GRN-012-PKT
Brassica rapa var. chinensis

A seed worth growing

Green 70 D Improved Asian Green Seed

Item #HSC-GRN-012-PKT

About this variety

A heat-tolerant choi sum.

Choi sum is a favorite vegetable across southern China and Taiwan. Green 70 D Improved has bright green, sweet, tender stems, cut just before or as the first buds open, and it regrows for more cuttings.

Use it in stir-fries, steamed or in soups. Sow a little thinner than other greens, about 10–12 seeds per foot.

About 21 days to baby leaf and 42 days to full size, from sowing. Open-pollinated.

Specs

  • Packet: 250 seeds
  • Average 200,000 seeds per lb.

In stock — Packet

Current price $6.65

Know before you sow

Quick Facts

Seed size & germination
Seed size (10 mm scale) and germination soil temperature chart for Asian greens

Growing times vary with weather, soil and local conditions.

Growing guide

From seed to harvest

Sow often

Early spring to midsummer, every 7–10 days for a steady supply.

Rows 12–18" apart

About 15 seeds per foot, 1/4" deep; most need no thinning.

Cover at sowing

Row cover stops flea beetle damage.

Pick by type

Shoot types as buds open, again and again; leafy types once.

Growing Information

Scientific name

Brassica rapa var. chinensis

Season

Sow from early spring into midsummer. In mild areas, or in a high tunnel for overwintering, sowing can continue into late fall.

Days to maturity

Counted from the direct-sowing date.

Direct sowing

For full-size bunches, sow about 15 seeds per foot (10–12 per foot for Green 70 D Improved), 1/4" deep, in rows 12–18" apart. Most of these greens need no thinning; any that do say so in the description.

Seeding rate

For bunching at that spacing: roughly 1 oz. per 830 ft. and 1 lb. per 13,000 ft.

Succession

A fresh sowing every 7–10 days keeps budding, cutting and heading types coming without a gap.

Insect pests

Floating row cover laid at sowing is the best defense against flea beetles.

Harvest

Flowering-shoot types such as choi sum and kailaan are picked when the buds are full and just a few have opened, and they regrow for several cuttings. Heading and leafy types such as komatsuna and Chinese cabbage are cut once, anywhere from medium to full size.

Packet

250 seeds.

Seeds per lb.

About 200,000 on average.

Satisfaction Guarantee

We want every packet you buy from Hensley’s Seed Co. to grow well for you.

If anything you order from us doesn’t meet your expectations, just let us know and we’ll replace it or refund what you paid.

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