Tatsoi

Brassica rapa var. rosularis

vegetable

verifiedReviewed by the GreenScout Team

Tatsoi is a compact, tender Asian green with small dark glossy leaves arranged in a rosette pattern, offering a mild, slightly spicy flavor. It matures rapidly (30–45 days) and is perfect for small spaces, containers, and salads. This cold-hardy brassica thrives in cool seasons and is excellent for succession planting.

Common Problems

Select the problem your Tatsoi is experiencing to get a treatment guide.

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Yellow Leaveschevron_right

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Boltingchevron_right

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Holes In Leaveschevron_right

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Wiltingchevron_right

Care Guide

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Light

Full sun to partial shade; 6 hours of sun is optimal; can tolerate partial shade in warm weather

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Water

Keep soil consistently moist; water 1–2 times per week; maintain even moisture without waterlogging

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Soil

Rich, well-draining soil with good organic matter; pH 6.0–7.5

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Fertiliser

Moderate nitrogen; apply balanced fertilizer every 3 weeks or use side-dressing of compost

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Temperature

Cool-season crop; ideal 50–75°F; cold-hardy and frost-tolerant; bolts above 75–80°F

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Humidity

Moderate humidity; prefers consistent moisture in air and soil

Toxicity

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Tatsoi is safe and commonly eaten fresh in salads and as a cooked vegetable

Common Diseases

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Common Pests

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Seasonal Care

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Resume regular watering and feeding as growth picks up.

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Peak growing season. Water and feed regularly.

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Reduce watering as growth slows. Stop heavy feeding.

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Minimal watering and feeding. Protect from frost if needed.

Frequently Asked Questions

How fast does Tatsoi mature?

It matures rapidly in just 30–45 days — ideal for succession planting and small spaces, since the compact rosette of dark glossy leaves doesn't need much room to develop.

Is Tatsoi related to Bok Choy?

Yes — it's a compact, tender Asian green in the same Brassica rapa species group, with a milder, slightly spicy flavor and a distinctive rosette growth habit rather than upright stems.