When to plant pole beans in Maryland
Maryland’s average last spring frost is April 14, and the first fall frost typically arrives around October 20 — about 189 frost-free days (USDA zones 5b, 6a, 6b, 7a, 7b, 8a). Pole Bean needs 60–70 days to mature, which fits comfortably within Maryland's growing season.
Maryland 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 Maryland: the short answer
For a spring planting, sow Apr 16 – May 5. 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 Maryland, 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 (Apr 16 – May 5). 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 Jun 20 – Jun 30). 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 Maryland’s average frost dates. More in the full pole bean growing guide.
Pole Bean planting dates by USDA zone in Maryland
Maryland spans USDA zones 5b, 6a, 6b, 7a, 7b, 8a. 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.
When to plant pole beans in nearby states
| State | Last frost | Sow |
|---|---|---|
| Maryland (this page) | April 14 | Apr 16 – May 5 |
| New Jersey | April 20 | Apr 22 – May 11 |
| Pennsylvania | May 1 | May 3 – May 22 |
| Delaware | April 14 | Apr 16 – May 5 |
| District of Columbia | April 10 | Apr 12 – May 1 |
| Virginia | April 15 | Apr 17 – May 6 |
| West Virginia | May 5 | May 7 – May 26 |
Questions gardeners in Maryland ask
When is the best time to plant pole beans in Maryland?
Sow pole beans in Maryland between April 16 and May 5. That timing is set by Maryland's average last spring frost of April 14; Maryland spans several climates, so cooler and higher parts of the state run later.
What is the latest I can plant pole beans in Maryland?
About August 21. Pole beans need at least 60 days to mature, and frost around October 20 ends the season, so later plantings risk being cut short.
When will pole beans planted in Maryland be ready to harvest?
Planted on time, pole beans are usually ready from about June 20 to June 30, 60-70 days after sowing.
When is the last frost in Maryland?
On average around April 14, with the first fall frost around October 20 - about 189 frost-free days. Your town may differ by two weeks or more.