Photo: "Brassica rapa subsp. narinosa" by Idéalités · CC BY-SA 4.0

Tatsoi · Asian Green

Tatsoi

Annual · Brassicaceae

Tatsoi is a compact Asian green that makes glossy spoon-shaped leaves in a low rosette and handles cold better than most salad crops. It is mild, tender, and quick, so it suits beginners who want a fast spring or fall green that also works in protected winter beds.

At a Glance

Days to Maturity

25–45 days

Sun

4+ hours

full sun in cool weather or light afternoon shade as temperatures warm

Spacing

6–8 "

Seed Start

3–5 weeks

before transplant

Container

Yes

2+ gallon pot

Height

0.5–1 ft

Zone Planting Guide

Your USDA Zone:

Growing Guide

Germination

Germination Time 4–8 days

Optimal Temp 65°F

Seed Depth 0.25"

Transplanting

Min Soil Temp 40°F

Harden Off 5 days

Watering

Weekly Water 1–1.5 "

Needs Consistent

Method Drip

Soil

pH Range 6–7

Soil Type Moisture-retentive, fertile loam with compost and good drainage.

Resilience

Heat: Low Cold: High Drought: Low

Common Problems

flea-beetles

Cause: Small beetles chew shot holes in young brassica leaves, especially in warm dry weather.

Prevention: Use row cover on young plants and keep growth moving with even moisture.

downy-mildew

Cause: Cool, humid weather and dense plantings can spot and collapse leaves.

Prevention: Improve airflow, water at the base, and remove badly infected foliage.

Nutrition

Feeding Intensity Light feeder

Harvest

Leaves should be deep green, crisp, and still tender, before the center elongates toward bolting.

Expected Yield 0.2–0.75 lbs/plant

Storage 5 days — Refrigerate dry leaves in a produce bag or sealed container with a paper towel.

Sources

seed_catalog SeedWise university Penn State Extension

Tatsoi Planting Dates by Zone

Planting dates for Tatsoi vary by USDA hardiness zone. Select your zone below for frost dates, start-indoors timing, and a full monthly planting calendar.

Zone 5A Zone 5B Zone 6A Zone 6B Zone 7A Zone 7B Zone 8A Zone 8B Zone 9A Zone 9B

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