When should I plant Soybean in Zone 4a?

Direct sow Soybean outdoors around 5月12日. Expect first harvest around 8月30日.

What is the last frost date for Zone 4a?

The average last spring frost date for Zone 4a is 5月5日. The first fall frost averages 10月1日, giving a 149-day growing season.

Yes. Soybean needs 110 days to harvest. Zone 4a has a 149-day growing season, which is sufficient.

Zone 4a has cold winters and a moderate growing season. Timing is key for Soybean in this zone. 末次霜冻: 5月5日. 初次霜冻: 10月1日.

Outdoor

Harvest

5月12日10月1日

Season: 5月5日 – 10月1日 (149 天)

区域4a

末次霜冻5月5日

初次霜冻10月1日

生长季149 天

收获110 天

日照全日照

Direct sow Soybean seeds outdoors around 5月12日. Wait until soil temperature reaches 60F. Space plants at 4/m² (15cm 间距).

First harvest approximately 8月30日 (~110 天 from planting). Continue harvesting until first frost (10月1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.