When should I plant Soybean in Zone 3b?

Direct sow Soybean outdoors around May 22. Expect first harvest around Sep 9.

What is the last frost date for Zone 3b?

The average last spring frost date for Zone 3b is May 15. The first fall frost averages Sep 22, giving a 130-day growing season.

Can I grow Soybean in Zone 3b?

Yes. Soybean needs 110 days to harvest. Zone 3b has a 130-day growing season, which is sufficient.

Growing Soybean in Zone 3b

Zone 3b has harsh winters and a short growing season. Start Soybean early indoors to maximize your harvest window. Poslednji mraz: May 15. Prvi mraz: Sep 22.

Planting Calendar

Outdoor

Harvest

May 22Sep 22

Season: May 15 – Sep 22 (130 дана)

Zona3b

Poslednji mrazMay 15

Prvi mrazSep 22

Sezona130 дана

Žetva110 дана

SunceПуно Сунце

When to Plant Soybean in Zone 3b

Sow Seeds Outdoors: May 22

Direct sow Soybean seeds outdoors around May 22. Wait until soil temperature reaches 60F. Space plants at 4/м² (15cm размак).

Harvest: Sep 9

First harvest approximately Sep 9 (~110 дана from planting). Continue harvesting until first frost (Sep 22).

Садња у Друштву

✅ Кукуруз ✅ Тиква ✅ Sesame

❌ Лук❌ Бели Лук

Soybean in Other Zones

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

Plan Your Garden Soybean

Track Soybean from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

Start Free Soybean Growing Guide