When should I plant Soybean in Zone 3a?

Direct sow Soybean outdoors around 5月29日. Expect first harvest around 9月16日.

What is the last frost date for Zone 3a?

The average last spring frost date for Zone 3a is 5月22日. The first fall frost averages 9月12日, giving a 113-day growing season.

Yes. Soybean needs 110 days to harvest. Zone 3a has a 113-day growing season, which is sufficient.

Zone 3a has harsh winters and a short growing season. Start Soybean early indoors to maximize your harvest window. 末次霜冻: 5月22日. 初次霜冻: 9月12日.

Outdoor

Harvest

5月29日9月12日

Season: 5月22日 – 9月12日 (113 天)

区域3a

末次霜冻5月22日

初次霜冻9月12日

生长季113 天

收获110 天

日照全日照

Direct sow Soybean seeds outdoors around 5月29日. Wait until soil temperature reaches 60F. Space plants at 4/m² (15cm 间距).

First harvest approximately 9月16日 (~110 天 from planting). Continue harvesting until first frost (9月12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.