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Growing Basil in Siem Reap

🇰🇭 Zone 13 Planting Guide · Tropical savanna climate

USDA Zone 13 365 frost-free days 50-75 days to harvest

Quick Answer: Growing Basil in Siem Reap

Yes, you can grow Basil in Siem Reap, KH! Plant during Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec for best results. Siem Reap is in USDA Zone 13 with a Tropical savanna climate, offering 365 frost-free days per year. The difficulty level is easy, and Basil takes 50-75 days to harvest. Basil needs full sun and regular watering.

Climate Match Analysis

Moderate Match Siem Reap + Basil

Siem Reap's climate requires careful timing. Summer highs (36°C) exceed Basil's maximum (35°C), so plant early or provide shade. Follow the recommended planting months for success.

Basil tolerates 10°C to 35°C
Optimal: 20°C - 30°C
Siem Reap range 20°C to 36°C

Siem Reap Climate Data

USDA Zone
13
Frost-Free
365days
Winter Low
20°C
Summer High
36°C
Rainfall
1380mm/yr
Climate
Aw
Tropical savanna

Basil Planting Calendar for Siem Reap

Green months show the best time to plant Basil in Siem Reap

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

Basil Growing Requirements

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Sunlight

Full Sun

6+ hours direct sunlight

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Water

Regular

Consistent moisture, 1-2 inches/week

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Days to Harvest

50-75

From planting to first harvest

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Difficulty

easy

Great for beginners

💡 Growing Tips for Basil

Pinch flower buds to encourage leaf growth. Harvest from top down. Wait until soil warms to at least 20°C before transplanting outdoors — cold soil stunts growth and can invite root rot. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.

Frost tolerance: Basil is NOT frost tolerant — wait until after the last frost in Siem Reap.

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Companion Plants for Basil

Find out which plants grow best alongside Basil — and which to keep apart

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Grow Basil Indoors

No garden? Learn how to grow Basil indoors with our complete guide

How to Grow Basil in Siem Reap

Siem Reap, KH is in USDA Hardiness Zone 13 with a Tropical savanna climate (Köppen Aw). With winter lows of 20°C and summer highs of 36°C, the growing season spans approximately 365 frost-free days. Basil is one of the easiest plants to grow in this climate.

Basil thrives in temperatures between 20°C and 30°C, requiring full sun and regular watering. In Siem Reap, the best months to plant Basil are January, February, March, April, May, June, July, August, September, October, November, December. Basil is not frost tolerant, so it's important to wait until after the last spring frost before transplanting outdoors. Expect to harvest in approximately 50-75 days after planting.

Siem Reap receives 1380mm of annual rainfall, which provides good natural moisture for Basil. Supplement with additional watering during dry spells.

Other Plants That Grow in Siem Reap

More plants you can grow alongside Basil in Siem Reap

Keep Exploring

Frequently Asked Questions

Can I grow basil in Siem Reap?

Yes! Basil can be successfully grown in Siem Reap, KH. Siem Reap is in USDA Hardiness Zone 13 with a Tropical savanna climate. The difficulty level for growing Basil here is rated "easy". The best months to plant are January, February, March, April, May, June, July, August, September, October, November, December.

When should I plant basil in Siem Reap?

In Siem Reap, the recommended planting months for Basil are January, February, March, April, May, June, July, August, September, October, November, December. Siem Reap has 365 frost-free days per year, with winter lows of 20°C and summer highs of 36°C. Since Basil is not frost tolerant, make sure to plant after the last frost date.

How long does basil take to grow in Siem Reap?

Basil typically takes 50-75 days from planting to harvest. In Siem Reap's Tropical savanna climate with 365 frost-free days, you have plenty of time to grow Basil to maturity. Pinch flower buds to encourage leaf growth. Harvest from top down. Wait until soil warms to at least 20°C before transplanting outdoors — cold soil stunts growth and can invite root rot. 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 basil indoors in Siem Reap?

Basil can potentially be grown indoors in Siem Reap 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 Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec outdoor planting window. Use containers with good drainage and regular watering.

What month do I plant basil in Siem Reap?

Plant Basil in Siem Reap during January, February, March, April, May, June, July, August, September, October, November, December. These are the optimal months based on Siem Reap's USDA Zone 13 climate, 365 frost-free days, and temperature range of 20°C to 36°C.

Is basil hard to grow in Siem Reap?

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

What grows well with basil in Siem Reap?

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

Does basil need full sun in Siem Reap?

Basil requires full sun. In Siem Reap, 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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