When to plant bush beans in Wyoming
Wyoming’s average last spring frost is May 20, and the first fall frost typically arrives around September 15 — about 118 frost-free days (USDA zones 3a, 3b, 4a, 4b, 5a, 6a). Bush Bean needs 50–60 days to mature, which fits comfortably within Wyoming's growing season.
Wyoming 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 bush beans in Wyoming: the short answer
For a spring planting, sow May 22 – Jun 10. Wait until the soil is at least 60°F and frost is over.
Succession sow again in Wyoming: Jun 10 · Jun 24 · Jul 8
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 bush beans in Wyoming, 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 (May 22 – Jun 10). Space plants about 4 inches apart in rows 18 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 Jul 16 – Jul 26). Bush Bean takes 50-60 days to reach harvest. Do not start indoors - beans hate root disturbance. Sow every 2 weeks until ~10 weeks before first frost for a steady supply.
Figures come from our crop data; dates use Wyoming’s average frost dates. More in the full bush bean growing guide.
Bush Bean planting dates by USDA zone in Wyoming
Wyoming spans USDA zones 3a, 3b, 4a, 4b, 5a, 6a. 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 bush bean dates shift with them.
When to plant bush beans in nearby states
Questions gardeners in Wyoming ask
When is the best time to plant bush beans in Wyoming?
Sow bush beans in Wyoming between May 22 and June 10. That timing is set by Wyoming's average last spring frost of May 20; Wyoming spans several climates, so cooler and higher parts of the state run later.
Can I plant bush beans in the fall in Wyoming?
Yes. For a fall crop, sow between June 20 and July 7, so the crop matures in cool weather before Wyoming's first frost around September 15.
When will bush beans planted in Wyoming be ready to harvest?
Planted on time, bush beans are usually ready from about July 16 to July 26, 50-60 days after sowing.
When is the last frost in Wyoming?
On average around May 20, with the first fall frost around September 15 - about 118 frost-free days. Your town may differ by two weeks or more.