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Growing Borage in Siem Reap

🇰🇭 Zone 13 Planting Guide · Tropical savanna climate

USDA Zone 13 365 frost-free days 50-60 days to harvest

Quick Answer: Growing Borage in Siem Reap

Yes, you can grow Borage in Siem Reap, KH! Plant during Nov, Dec, Jan, Feb 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 Borage takes 50-60 days to harvest. Borage needs full sun and moderate watering.

Climate Match Analysis

Moderate Match Siem Reap + Borage

Siem Reap's climate requires careful timing. Summer highs (36°C) exceed Borage's maximum (28°C), so plant early or provide shade. Follow the recommended planting months for success.

Borage tolerates -5°C to 28°C
Optimal: 10°C - 22°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

Borage Planting Calendar for Siem Reap

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

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

Borage Growing Requirements

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Sunlight

Full Sun

6+ hours direct sunlight

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Water

Moderate

Keep soil consistently moist

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Days to Harvest

50-60

From planting to first harvest

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Difficulty

easy

Great for beginners

💡 Growing Tips for Borage

Self-seeds prolifically. Edible flowers for salads and drinks. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Water steadily but avoid soggy soil. A 5-cm layer of organic mulch helps balance moisture and suppress weeds.

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

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Companion Plants for Borage

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

How to Grow Borage 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. Borage is one of the easiest plants to grow in this climate.

Borage thrives in temperatures between 10°C and 22°C, requiring full sun and moderate watering. In Siem Reap, the best months to plant Borage are November, December, January, February. Since Borage can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 50-60 days after planting.

Siem Reap receives 1380mm of annual rainfall, which provides good natural moisture for Borage. Monitor soil moisture and water as needed.

Other Plants That Grow in Siem Reap

More plants you can grow alongside Borage in Siem Reap

Keep Exploring

Frequently Asked Questions

Can I grow borage in Siem Reap?

Yes! Borage 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 Borage here is rated "easy". The best months to plant are November, December, January, February.

When should I plant borage in Siem Reap?

In Siem Reap, the recommended planting months for Borage are November, December, January, February. Siem Reap has 365 frost-free days per year, with winter lows of 20°C and summer highs of 36°C. Borage is frost tolerant, giving you more flexibility with planting dates.

How long does borage take to grow in Siem Reap?

Borage typically takes 50-60 days from planting to harvest. In Siem Reap's Tropical savanna climate with 365 frost-free days, you have plenty of time to grow Borage to maturity. Self-seeds prolifically. Edible flowers for salads and drinks. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Water steadily but avoid soggy soil. A 5-cm layer of organic mulch helps balance moisture and suppress weeds.

Can I grow borage indoors in Siem Reap?

Borage 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 Nov, Dec, Jan, Feb outdoor planting window. Use containers with good drainage and moderate watering.

What month do I plant borage in Siem Reap?

Plant Borage in Siem Reap during November, December, January, February. 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 borage hard to grow in Siem Reap?

Borage 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 Borage in Siem Reap is Moderate.

What grows well with borage in Siem Reap?

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

Does borage need full sun in Siem Reap?

Borage 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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