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🥬 Vegetable easy

Growing Tatsoi in Portland

🇺🇸 Zone 7 Planting Guide · Warm-summer Mediterranean climate

USDA Zone 7 240 frost-free days 21-45 days to harvest

Quick Answer: Growing Tatsoi in Portland

Yes, you can grow Tatsoi in Portland, US! Plant during Jan, Feb, Mar, Sep, Oct for best results. Portland is in USDA Zone 7 with a Warm-summer Mediterranean climate, offering 240 frost-free days per year. The difficulty level is easy, and Tatsoi takes 21-45 days to harvest. Tatsoi needs full sun to partial shade and regular watering.

Climate Match Analysis

Moderate Match Portland + Tatsoi

Portland's climate requires careful timing. Summer highs (27°C) exceed Tatsoi's maximum (25°C), so plant early or provide shade. Follow the recommended planting months for success.

Tatsoi tolerates -10°C to 25°C
Optimal: 10°C - 20°C
Portland range 2°C to 27°C

Portland Climate Data

USDA Zone
7
Frost-Free
240days
Winter Low
2°C
Summer High
27°C
Rainfall
1090mm/yr
Climate
Csb
Warm-summer Mediterranean

Tatsoi Planting Calendar for Portland

Green months show the best time to plant Tatsoi in Portland

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Plant Tatsoi Not recommended

Tatsoi Growing Requirements

☀️

Sunlight

Full Sun to Partial Shade

2-4 hours direct sunlight

💧

Water

Regular

Consistent moisture, 1-2 inches/week

📅

Days to Harvest

21-45

From planting to first harvest

📊

Difficulty

easy

Great for beginners

💡 Growing Tips for Tatsoi

Very cold-hardy -- grows under snow. Fast-growing. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.

Frost tolerance: Tatsoi is frost tolerant — you can plant earlier in spring.

How to Grow Tatsoi in Portland

Portland, US is in USDA Hardiness Zone 7 with a Warm-summer Mediterranean climate (Köppen Csb). With winter lows of 2°C and summer highs of 27°C, the growing season spans approximately 240 frost-free days. Tatsoi is one of the easiest plants to grow in this climate.

Tatsoi thrives in temperatures between 10°C and 20°C, requiring full sun to partial shade and regular watering. In Portland, the best months to plant Tatsoi are January, February, March, September, October. Since Tatsoi can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 21-45 days after planting.

Portland receives 1090mm of annual rainfall, which provides good natural moisture for Tatsoi. Supplement with additional watering during dry spells.

Other Plants That Grow in Portland

More plants you can grow alongside Tatsoi in Portland

Keep Exploring

Frequently Asked Questions

Can I grow tatsoi in Portland?

Yes! Tatsoi can be successfully grown in Portland, US. Portland is in USDA Hardiness Zone 7 with a Warm-summer Mediterranean climate. The difficulty level for growing Tatsoi here is rated "easy". The best months to plant are January, February, March, September, October.

When should I plant tatsoi in Portland?

In Portland, the recommended planting months for Tatsoi are January, February, March, September, October. Portland has 240 frost-free days per year, with winter lows of 2°C and summer highs of 27°C. Tatsoi is frost tolerant, giving you more flexibility with planting dates.

How long does tatsoi take to grow in Portland?

Tatsoi typically takes 21-45 days from planting to harvest. In Portland's Warm-summer Mediterranean climate with 240 frost-free days, you have plenty of time to grow Tatsoi to maturity. Very cold-hardy -- grows under snow. Fast-growing. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.

Can I grow tatsoi indoors in Portland?

Tatsoi can potentially be grown indoors in Portland with proper conditions. It requires full sun to partial shade (2-4 hours of indirect light). Indoor growing extends your season beyond the Jan, Feb, Mar, Sep, Oct outdoor planting window. Use containers with good drainage and regular watering.

What month do I plant tatsoi in Portland?

Plant Tatsoi in Portland during January, February, March, September, October. These are the optimal months based on Portland's USDA Zone 7 climate, 240 frost-free days, and temperature range of 2°C to 27°C.

Is tatsoi hard to grow in Portland?

Tatsoi is rated "easy" to grow in Portland. This is a great choice for beginners — it is forgiving and adapts well to this climate. The climate match for Tatsoi in Portland is Moderate.

What grows well with tatsoi in Portland?

In Portland, you can grow many companion plants alongside Tatsoi. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in Portland's Zone 7 climate.

Does tatsoi need full sun in Portland?

Tatsoi requires full sun to partial shade. Tatsoi tolerates lower light. In Portland, a spot with filtered or indirect light for 2-4 hours works well.

Last updated: March 2026 · Climate data from NOAA, FAO, USDA

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