Growing Soybean in Zone 10b
Zone 10b has a year-round growing season. Soybean can be planted almost any time with proper planning. Last frost: Jan 28. First frost: Dec 22.
Planting Calendar
Season: Jan 28 – Dec 22 (328 days)
When to Plant Soybean in Zone 10b
Sow Seeds Outdoors: Feb 4
Direct sow Soybean seeds outdoors around Feb 4. Soil temperature should be at least 60°F. Space at 4/sqft (6" apart).
Harvest: May 25
First harvest approximately May 25 (~110 days from planting). Continue harvesting until first frost (Dec 22).
Companion Planting
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 13bFrequently Asked Questions
When should I plant Soybean in Zone 10b?
Direct sow Soybean outdoors around Feb 4. Harvest around May 25.
What is the last frost date for Zone 10b?
The average last spring frost date for Zone 10b is Jan 28. The first fall frost averages Dec 22, giving a 328-day growing season.
Can I grow Soybean in Zone 10b?
Yes. Soybean needs 110 days to harvest. Zone 10b has a 328-day growing season, which is sufficient.
What is the best month to plant Soybean in Zone 10b?
The best time to plant Soybean in Zone 10b is around Feb 4, when soil temperatures are suitable and frost risk has passed.
What companion plants grow well with Soybean?
Good companion plants for Soybean include Corn, Squash, Sesame. Avoid planting Soybean near Onion, Garlic.
How long does Soybean take to harvest?
Soybean takes approximately 110 days from planting to harvest. In Zone 10b, expect your first harvest around May 25.
Plan Your Soybean Garden
Track Soybean from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
Start Free Soybean Growing Guide