When should I plant Soybean in Zone 3b?

Direct sow Soybean outdoors around 5月22日. Expect first harvest around 9月9日.

What is the last frost date for Zone 3b?

The average last spring frost date for Zone 3b is 5月15日. The first fall frost averages 9月22日, giving a 130-day growing season.

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

Zone 3b has harsh winters and a short growing season. Start Soybean early indoors to maximize your harvest window. 末次霜冻: 5月15日. 初次霜冻: 9月22日.

Outdoor

Harvest

5月22日9月22日

Season: 5月15日 – 9月22日 (130 天)

区域3b

末次霜冻5月15日

初次霜冻9月22日

生长季130 天

收获110 天

日照全日照

Direct sow Soybean seeds outdoors around 5月22日. Wait until soil temperature reaches 60F. Space plants at 4/m² (15cm 间距).

First harvest approximately 9月9日 (~110 天 from planting). Continue harvesting until first frost (9月22日).

❌ 洋葱❌ 大蒜

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