Bush Beans in Zone 10a & 10b
Phaseolus vulgaris
When to plant bush beans in zone 10b
Zones 10a and 10b share the same average frost dates in our data, so this page covers both.
Method: Direct sow: Direct-sow outside. Bush Beans doesn't transplant well, or doesn't need the extra time indoors.
| Window | Spring window |
|---|---|
| Start indoors | Not typically started indoors |
| Direct sow / transplant outside | Mar–Apr |
| Estimated harvest | Apr 25–Jun 24 (~55 days after direct-sowing) |
| Window | Monsoon window |
|---|---|
| Start indoors | Not typically started indoors |
| Direct sow / transplant outside | Aug–Sep |
| Estimated harvest | Sep 25–Nov 24 (~55 days after direct-sowing) |
Spacing: 9 per square foot (square-foot-gardening spacing). Mature height: 1-2 ft.
Zone 10b dates sourced from growinginthegarden.com.
Bush beans are about as low-effort as vegetable gardening gets: direct-sow the seed after your last frost, skip the trellis entirely, and harvest in under two months. They're a good crop to fill a bed with while slower plants like peppers and tomatoes are still getting established.
How bush beans fits zone 10's season
Zone 10b's frost-free window runs about 324 days, from January 30 to December 20. Bush Beans needs about 55 days from sowing to first harvest.
Good companions
- Sweet Corn: The classic 'three sisters' pairing. WSU Extension confirms the real mechanism: corn stalks give beans something to climb, beans fix nitrogen the corn uses, and squash (the third sister) shades the soil to suppress weeds.
- Cucumber: Beans fix nitrogen that heavy-feeding cucumbers use.
Where to buy bush bean seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing bush beans" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 10b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →
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Growing Bush Beans in USDA zone 10b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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