When should I plant Soybean in Zone 3a?

Direct sow Soybean outdoors around May 29. Expect first harvest around Sep 16.

What is the last frost date for Zone 3a?

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

Can I grow Soybean in Zone 3a?

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

Growing Soybean in Zone 3a

Zone 3a has harsh winters and a short growing season. Start Soybean early indoors to maximize your harvest window. Sidste frost: May 22. Første frost: Sep 12.

Planting Calendar

Outdoor

Harvest

May 29Sep 12

Season: May 22 – Sep 12 (113 dage)

Zone3a

Sidste frostMay 22

Første frostSep 12

Sæson113 dage

Høst110 dage

SolFuld Sol

When to Plant Soybean in Zone 3a

Sow Seeds Outdoors: May 29

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

Harvest: Sep 16

First harvest approximately Sep 16 (~110 dage from planting). Continue harvesting until first frost (Sep 12).

Samdyrkning

✅ Majs ✅ Græskar ✅ Sesame

❌ Løg❌ Hvid Løg

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