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Growing Nasturtium in Phnom Penh

🇰🇭 Zone 13 Planting Guide · Tropical savanna climate

USDA Zone 13 365 frost-free days 35-52 days to harvest

Quick Answer: Growing Nasturtium in Phnom Penh

Yes, you can grow Nasturtium in Phnom Penh, KH! Plant during Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec for best results. Phnom Penh is in USDA Zone 13 with a Tropical savanna climate, offering 365 frost-free days per year. The difficulty level is easy, and Nasturtium takes 35-52 days to harvest. Nasturtium needs full sun to partial shade and low watering.

Climate Match Analysis

Moderate Match Phnom Penh + Nasturtium

Phnom Penh's climate requires careful timing. Summer highs (35°C) exceed Nasturtium's maximum (30°C), so plant early or provide shade. Follow the recommended planting months for success.

Nasturtium tolerates 5°C to 30°C
Optimal: 15°C - 25°C
Phnom Penh range 22°C to 35°C

Phnom Penh Climate Data

USDA Zone
13
Frost-Free
365days
Winter Low
22°C
Summer High
35°C
Rainfall
1389mm/yr
Climate
Aw
Tropical savanna

Nasturtium Planting Calendar for Phnom Penh

Green months show the best time to plant Nasturtium in Phnom Penh

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

Nasturtium Growing Requirements

☀️

Sunlight

Full Sun to Partial Shade

2-4 hours direct sunlight

💧

Water

Low

Drought tolerant, water sparingly

📅

Days to Harvest

35-52

From planting to first harvest

📊

Difficulty

easy

Great for beginners

💡 Growing Tips for Nasturtium

Poor soil produces more flowers. Seeds are large and easy for kids. Wait until soil warms to at least 15°C before transplanting outdoors — cold soil stunts growth and can invite root rot. Overwatering is the most common mistake. Let soil dry out between waterings and ensure drainage is excellent.

Frost tolerance: Nasturtium is NOT frost tolerant — wait until after the last frost in Phnom Penh.

How to Grow Nasturtium in Phnom Penh

Phnom Penh, KH 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. Nasturtium is one of the easiest plants to grow in this climate.

Nasturtium thrives in temperatures between 15°C and 25°C, requiring full sun to partial shade and low watering. In Phnom Penh, the best months to plant Nasturtium are January, February, March, April, May, June, July, August, September, October, November, December. Nasturtium is not frost tolerant, so it's important to wait until after the last spring frost before transplanting outdoors. Expect to harvest in approximately 35-52 days after planting.

Phnom Penh receives 1389mm of annual rainfall, which provides good natural moisture for Nasturtium. Be careful not to overwater — the natural rainfall may be sufficient.

Other Plants That Grow in Phnom Penh

More plants you can grow alongside Nasturtium in Phnom Penh

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Frequently Asked Questions

Can I grow nasturtium in Phnom Penh?

Yes! Nasturtium can be successfully grown in Phnom Penh, KH. Phnom Penh is in USDA Hardiness Zone 13 with a Tropical savanna climate. The difficulty level for growing Nasturtium 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 nasturtium in Phnom Penh?

In Phnom Penh, the recommended planting months for Nasturtium are January, February, March, April, May, June, July, August, September, October, November, December. Phnom Penh has 365 frost-free days per year, with winter lows of 22°C and summer highs of 35°C. Since Nasturtium is not frost tolerant, make sure to plant after the last frost date.

How long does nasturtium take to grow in Phnom Penh?

Nasturtium typically takes 35-52 days from planting to harvest. In Phnom Penh's Tropical savanna climate with 365 frost-free days, you have plenty of time to grow Nasturtium to maturity. Poor soil produces more flowers. Seeds are large and easy for kids. Wait until soil warms to at least 15°C before transplanting outdoors — cold soil stunts growth and can invite root rot. Overwatering is the most common mistake. Let soil dry out between waterings and ensure drainage is excellent.

Can I grow nasturtium indoors in Phnom Penh?

Nasturtium can potentially be grown indoors in Phnom Penh 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, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec outdoor planting window. Use containers with good drainage and low watering.

What month do I plant nasturtium in Phnom Penh?

Plant Nasturtium in Phnom Penh during January, February, March, April, May, June, July, August, September, October, November, December. These are the optimal months based on Phnom Penh's USDA Zone 13 climate, 365 frost-free days, and temperature range of 22°C to 35°C.

Is nasturtium hard to grow in Phnom Penh?

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

What grows well with nasturtium in Phnom Penh?

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

Does nasturtium need full sun in Phnom Penh?

Nasturtium requires full sun to partial shade. Nasturtium tolerates lower light. In Phnom Penh, 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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