When should I plant Soybean in Zone 9b?

Direct sow Soybean outdoors around Mar 17. Harvest around Jul 5.

What is the last frost date for Zone 9b?

The average last spring frost date for Zone 9b is Mar 10. The first fall frost averages Nov 15, giving a 250-day growing season.

Yes. Soybean needs 110 days to harvest. Zone 9b has a 250-day growing season, which is sufficient.

Zone 9b has warm winters and an extended growing season — excellent for heat-loving crops like Soybean. Last frost: Mar 10. First frost: Nov 15.

Outdoor

Harvest

Mar 17Nov 15

Season: Mar 10 – Nov 15 (250 days)

Zone9b

Last FrostMar 10

First FrostNov 15

Season Length250 days

Days to Harvest110

SunFull Sun

Frost ToleranceNone

Spacing4/sqft (6" apart)

Direct sow Soybean seeds outdoors around Mar 17. Soil temperature should be at least 60°F. Space at 4/sqft (6" apart).

First harvest approximately Jul 5 (~110 days from planting). Continue harvesting until first frost (Nov 15).

❌ Onion❌ Garlic

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