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🥬 Vegetable medium

Growing Leek in Bangkok

🇹🇭 Zone 13 Planting Guide · Tropical savanna climate

USDA Zone 13 365 frost-free days 90-120 days to harvest

Quick Answer: Growing Leek in Bangkok

Yes, you can grow Leek in Bangkok, TH! Plant during Nov, Dec, Jan, Feb for best results. Bangkok is in USDA Zone 13 with a Tropical savanna climate, offering 365 frost-free days per year. The difficulty level is medium, and Leek takes 90-120 days to harvest. Leek needs full sun and regular watering.

Climate Match Analysis

Moderate Match Bangkok + Leek

Bangkok's climate requires careful timing. Summer highs (35°C) exceed Leek's maximum (25°C), so plant early or provide shade. Follow the recommended planting months for success.

Leek tolerates -5°C to 25°C
Optimal: 10°C - 20°C
Bangkok range 22°C to 35°C

Bangkok Climate Data

USDA Zone
13
Frost-Free
365days
Winter Low
22°C
Summer High
35°C
Rainfall
1648mm/yr
Climate
Aw
Tropical savanna

Leek Planting Calendar for Bangkok

Green months show the best time to plant Leek in Bangkok

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

Leek Growing Requirements

☀️

Sunlight

Full Sun

6+ hours direct sunlight

💧

Water

Regular

Consistent moisture, 1-2 inches/week

📅

Days to Harvest

90-120

From planting to first harvest

📊

Difficulty

medium

Some experience helpful

💡 Growing Tips for Leek

Plant in trenches and hill soil as they grow to blanch stems. Very cold hardy. 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: Leek is frost tolerant — you can plant earlier in spring.

How to Grow Leek in Bangkok

Bangkok, TH is in USDA Hardiness Zone 13 with a Tropical savanna climate (Köppen Aw). With winter lows of 22°C and summer highs of 35°C, the growing season spans approximately 365 frost-free days. Leek grows well with some gardening knowledge in this climate.

Leek thrives in temperatures between 10°C and 20°C, requiring full sun and regular watering. In Bangkok, the best months to plant Leek are November, December, January, February. Since Leek can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 90-120 days after planting.

Bangkok receives 1648mm of annual rainfall, which provides good natural moisture for Leek. Supplement with additional watering during dry spells.

Other Plants That Grow in Bangkok

More plants you can grow alongside Leek in Bangkok

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Frequently Asked Questions

Can I grow leek in Bangkok?

Yes! Leek can be successfully grown in Bangkok, TH. Bangkok is in USDA Hardiness Zone 13 with a Tropical savanna climate. The difficulty level for growing Leek here is rated "medium". The best months to plant are November, December, January, February.

When should I plant leek in Bangkok?

In Bangkok, the recommended planting months for Leek are November, December, January, February. Bangkok has 365 frost-free days per year, with winter lows of 22°C and summer highs of 35°C. Leek is frost tolerant, giving you more flexibility with planting dates.

How long does leek take to grow in Bangkok?

Leek typically takes 90-120 days from planting to harvest. In Bangkok's Tropical savanna climate with 365 frost-free days, you have plenty of time to grow Leek to maturity. Plant in trenches and hill soil as they grow to blanch stems. Very cold hardy. 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 leek indoors in Bangkok?

Leek can potentially be grown indoors in Bangkok with proper conditions. It requires full sun (6+ hours of direct light — a south-facing window or grow lights recommended). Indoor growing extends your season beyond the Nov, Dec, Jan, Feb outdoor planting window. Use containers with good drainage and regular watering.

What month do I plant leek in Bangkok?

Plant Leek in Bangkok during November, December, January, February. These are the optimal months based on Bangkok's USDA Zone 13 climate, 365 frost-free days, and temperature range of 22°C to 35°C.

Is leek hard to grow in Bangkok?

Leek is rated "medium" to grow in Bangkok. Some gardening experience is helpful. Pay attention to watering schedules and planting timing. The climate match for Leek in Bangkok is Moderate.

What grows well with leek in Bangkok?

In Bangkok, you can grow many companion plants alongside Leek. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in Bangkok's Zone 13 climate.

Does leek need full sun in Bangkok?

Leek requires full sun. In Bangkok, provide at least 6 hours of direct sunlight daily. During peak summer heat, some afternoon shade can help prevent heat stress.

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

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