Skip to content
🌻 Flower easy

Growing Nasturtium in Valletta

🇲🇹 Zone 9 Planting Guide · Hot-summer Mediterranean climate

USDA Zone 9 365 frost-free days 35-52 days to harvest

Quick Answer: Growing Nasturtium in Valletta

Yes, you can grow Nasturtium in Valletta, MT! Plant during Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec for best results. Valletta is in USDA Zone 9 with a Hot-summer Mediterranean 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 Valletta + Nasturtium

Valletta's climate requires careful timing. Summer highs (31°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
Valletta range 10°C to 31°C

Valletta Climate Data

USDA Zone
9
Frost-Free
365days
Winter Low
10°C
Summer High
31°C
Rainfall
553mm/yr
Climate
Csa
Hot-summer Mediterranean

Nasturtium Planting Calendar for Valletta

Green months show the best time to plant Nasturtium in Valletta

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 Valletta.

How to Grow Nasturtium in Valletta

Valletta, MT is in USDA Hardiness Zone 9 with a Hot-summer Mediterranean climate (Köppen Csa). With winter lows of 10°C and summer highs of 31°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 Valletta, 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.

With 553mm of annual rainfall, Valletta provides moderate natural moisture. This should be adequate for Nasturtium's water needs.

Other Plants That Grow in Valletta

More plants you can grow alongside Nasturtium in Valletta

Keep Exploring

Frequently Asked Questions

Can I grow nasturtium in Valletta?

Yes! Nasturtium can be successfully grown in Valletta, MT. Valletta is in USDA Hardiness Zone 9 with a Hot-summer Mediterranean 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 Valletta?

In Valletta, the recommended planting months for Nasturtium are January, February, March, April, May, June, July, August, September, October, November, December. Valletta has 365 frost-free days per year, with winter lows of 10°C and summer highs of 31°C. Since Nasturtium is not frost tolerant, make sure to plant after the last frost date.

How long does nasturtium take to grow in Valletta?

Nasturtium typically takes 35-52 days from planting to harvest. In Valletta's Hot-summer Mediterranean 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 Valletta?

Nasturtium can potentially be grown indoors in Valletta 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 Valletta?

Plant Nasturtium in Valletta during January, February, March, April, May, June, July, August, September, October, November, December. These are the optimal months based on Valletta's USDA Zone 9 climate, 365 frost-free days, and temperature range of 10°C to 31°C.

Is nasturtium hard to grow in Valletta?

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

What grows well with nasturtium in Valletta?

In Valletta, 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 Valletta's Zone 9 climate.

Does nasturtium need full sun in Valletta?

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

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

See an error? Report it