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Growing Soybean in Valletta

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

USDA Zone 9 365 frost-free days 80-120 days to harvest

Quick Answer: Growing Soybean in Valletta

Yes, you can grow Soybean 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 medium, and Soybean takes 80-120 days to harvest. Soybean needs full sun and regular watering.

Climate Match Analysis

Good Match Valletta + Soybean

Valletta's temperatures (10°C to 31°C) are within the tolerable range for Soybean (10°C to 35°C), though not always in the optimal zone (20°C to 30°C). Plant during recommended months for best results.

Soybean tolerates 10°C to 35°C
Optimal: 20°C - 30°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

Soybean Planting Calendar for Valletta

Green months show the best time to plant Soybean in Valletta

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

Soybean Growing Requirements

☀️

Sunlight

Full Sun

6+ hours direct sunlight

💧

Water

Regular

Consistent moisture, 1-2 inches/week

📅

Days to Harvest

80-120

From planting to first harvest

📊

Difficulty

medium

Some experience helpful

💡 Growing Tips for Soybean

Inoculate seeds with nitrogen-fixing bacteria. Bush types don't need support. 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: Soybean is NOT frost tolerant — wait until after the last frost in Valletta.

How to Grow Soybean 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. Soybean grows well with some gardening knowledge in this climate.

Soybean thrives in temperatures between 20°C and 30°C, requiring full sun and regular watering. In Valletta, the best months to plant Soybean are January, February, March, April, May, June, July, August, September, October, November, December. Soybean is not frost tolerant, so it's important to wait until after the last spring frost before transplanting outdoors. Expect to harvest in approximately 80-120 days after planting.

With 553mm of annual rainfall, Valletta provides moderate natural moisture. You'll likely need to supplement with regular watering, especially during the growing season.

Other Plants That Grow in Valletta

More plants you can grow alongside Soybean in Valletta

Keep Exploring

Frequently Asked Questions

Can I grow soybean in Valletta?

Yes! Soybean 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 Soybean here is rated "medium". The best months to plant are January, February, March, April, May, June, July, August, September, October, November, December.

When should I plant soybean in Valletta?

In Valletta, the recommended planting months for Soybean 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 Soybean is not frost tolerant, make sure to plant after the last frost date.

How long does soybean take to grow in Valletta?

Soybean typically takes 80-120 days from planting to harvest. In Valletta's Hot-summer Mediterranean climate with 365 frost-free days, you have plenty of time to grow Soybean to maturity. Inoculate seeds with nitrogen-fixing bacteria. Bush types don't need support. 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 soybean indoors in Valletta?

Soybean can potentially be grown indoors in Valletta 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 soybean in Valletta?

Plant Soybean 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 soybean hard to grow in Valletta?

Soybean is rated "medium" to grow in Valletta. Some gardening experience is helpful. Pay attention to watering schedules and planting timing. The climate match for Soybean in Valletta is Good.

What grows well with soybean in Valletta?

In Valletta, you can grow many companion plants alongside Soybean. 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 soybean need full sun in Valletta?

Soybean requires full sun. In Valletta, provide at least 6 hours of direct sunlight daily. Most garden locations with southern exposure will work well.

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

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