When to plant pole beans in California
California’s average last spring frost is February 20, and the first fall frost typically arrives around December 1 — about 284 frost-free days (USDA zones 5a, 6b, 7b, 8b, 9b, 10a, 10b). Pole Bean needs 60–70 days to mature, which fits comfortably within California's growing season.
California covers a wide range of climates, so your exact frost dates may differ from the state average by two weeks or more. For dates tuned to your town, use the calendar generator.
When to plant pole beans in California: the short answer
For a spring planting, sow Feb 22 – Mar 13. Wait until the soil is at least 60°F and frost is over.
Windows are ~1–2 week bands around each date. Frost dates are a statewide average from NOAA/NCEI normals; your town may differ by two weeks or more. Calendar year 2026.
How to grow pole beans in California, step by step
- Prepare the bed. They need at least six to eight hours of direct sun a day and loose soil at least 18 inches deep, with a pH between 6.0 and 7.5. Dig in compost before planting.
- Sow outdoors (Feb 22 – Mar 13). Space plants about 6 inches apart in rows 42 inches apart, sowing seed 1.5 inches deep. It is killed by frost, so nothing goes outside until the danger has passed.
- Water and feed. Give it steady, even moisture, about an inch of water a week from rain or the hose.
- Watch for pests and problems. Pests: Mexican bean beetle, aphids, bean leaf beetle. Diseases and disorders: anthracnose, bacterial blight, bean rust, bean mosaic virus.
- Harvest (from about Apr 28 – May 8). Pole Bean takes 60-70 days to reach harvest. One well-tended sowing keeps producing for 6-8 weeks if you pick often. Set the trellis at sowing time.
Figures come from our crop data; dates use California’s average frost dates. More in the full pole bean growing guide.
Pole Bean planting dates by USDA zone in California
California spans USDA zones 5a, 6b, 7b, 8b, 9b, 10a, 10b. Colder zones, usually higher or further inland, have a later last spring frost and an earlier first fall frost than the state average, so the pole bean dates shift with them.
| Zone | Last frost | First frost | Season | Start indoors | Plant pole bean |
|---|---|---|---|---|---|
| Zone 5 | Apr 30 | Oct 5 | 160 days | - | May 2 – May 21 |
| Zone 6 | Apr 15 | Oct 15 | 185 days | - | Apr 17 – May 6 |
| Zone 7 | Apr 5 | Oct 25 | 200 days | - | Apr 7 – Apr 26 |
| Zone 8 | Mar 20 | Nov 5 | 230 days | - | Mar 22 – Apr 10 |
| Zone 9 | Feb 20 | Nov 30 | 280 days | - | Feb 22 – Mar 13 |
| Zone 10 | Jan 30 | Dec 15 | 330 days | - | Feb 1 – Feb 20 |
Questions gardeners in California ask
When is the best time to plant pole beans in California?
Sow pole beans in California between February 22 and March 13. That timing is set by California's average last spring frost of February 20; California spans several climates, so cooler and higher parts of the state run later.
What is the latest I can plant pole beans in California?
About October 2. Pole beans need at least 60 days to mature, and frost around December 1 ends the season, so later plantings risk being cut short.
When will pole beans planted in California be ready to harvest?
Planted on time, pole beans are usually ready from about April 28 to May 8, 60-70 days after sowing.
When is the last frost in California?
On average around February 20, with the first fall frost around December 1 - about 284 frost-free days. Your town may differ by two weeks or more.