When to plant pole beans by city
Sow pole beans outdoors 1–4 weeks after your last frost, once the soil is at least 60°F. Here is what that means for 2027 in cities across the US, using each city’s average frost dates and the date its normal daily temperature reaches 60°F, so cool-spring places like Seattle wait for real warmth (NOAA 1991–2020). Pick the city with the climate most like yours, or enter your ZIP code above.
| City | Last frost | Sow outdoors |
|---|---|---|
| Seattle, WA (9a) | Mar 13 | May 29 – Jun 19 |
| Portland, OR (8b) | Feb 25 | May 24 – Jun 14 |
| Sacramento, CA (9b) | Jan 12 | Apr 5–26 |
| Phoenix, AZ (10a) | Jan 5 | Feb 15 – Mar 8 |
| Salt Lake City, UT (7b) | Mar 31 | May 8–29 |
| Denver, CO (6a) | Apr 30 | May 17 – Jun 7 |
| Dallas, TX (8b) | Mar 2 | Mar 17 – Apr 7 |
| Minneapolis, MN (5a) | Apr 23 | May 19 – Jun 9 |
| Kansas City, MO (6b) | Apr 4 | Apr 25 – May 16 |
| Chicago, IL (6b) | Apr 10 | May 22 – Jun 12 |
| Columbus, OH (6b) | Apr 20 | May 7–28 |
| Nashville, TN (7b) | Apr 1 | Apr 16 – May 7 |
| Atlanta, GA (8a) | Mar 24 | Apr 8–29 |
| Raleigh, NC (8a) | Mar 28 | Apr 13 – May 4 |
| Philadelphia, PA (7b) | Mar 30 | Apr 27 – May 18 |
| Boston, MA (7a) | Apr 4 | May 20 – Jun 10 |
In frost-free parts of Florida, southern California and the Gulf Coast, timing is about heat instead: plant pole beans in late winter or early spring and again in late summer.
Don’t go by the calendar alone. Pole beans planted into cold soil sit still for weeks; wait until the soil 4 inches down is at least 60°F and nights stay above 50°F.
Pole bean spacing
In a square-foot bed, plant 8 per square foot, growing them up a trellis or cage. In traditional rows, space plants about 6 inches apart with 30 inches between rows.
Needs a 6–8 foot support. Crops longer than bush beans.
How to grow pole beans
Pole beans climb 6–8 feet and keep producing for weeks longer than bush beans, so a short row or a teepee yields a lot in a small footprint. Many gardeners also prefer their flavor. They need a sturdy support set up before you sow.
Sun and soil
Full sun and well-drained soil of moderate fertility, pH about 6.0–7.0. Provide about 1 inch of water a week, more during flowering and pod set.
Planting
- Put up a 6–8 foot trellis, fence or pole teepee before sowing.
- Sow 1 inch deep, 1–4 weeks after the last frost, when soil is at least 60°F.
- Space seeds 6 inches apart along the support, with rows 30 inches apart. On a teepee, sow 4–6 seeds around each pole.
Care
- Guide the first tendrils onto the support; after that the vines twine on their own.
- Mulch and water evenly through the long harvest period.
- Pinch the tips when vines reach the top of the support to push growth into side shoots.
- Skip nitrogen fertilizer; beans make their own.
Harvest
Start picking about 60–70 days after sowing, when pods are full size but still smooth, before seeds bulge. Pick every few days. Plants stop flowering if pods are left to mature, but with regular picking they bear until frost or until heat slows them.
Common problems
- Mexican bean beetle: Hand-pick adults and larvae from leaf undersides and crush yellow egg clusters.
- Japanese beetles: Knock them into a jar of soapy water in the morning when they are sluggish.
- Bean rust: Small reddish-brown pustules on leaves. Remove infected leaves, improve airflow, and choose resistant varieties.
- Few pods in midsummer: Heat and dry soil cause blossom drop. Keep plants watered; pods set again when nights cool.
Varieties to try
- 'Kentucky Wonder' — old favorite with rich flavor
- 'Blue Lake' (pole) — round, stringless, heavy yields
- 'Fortex' — very long, slender, stringless pods
- 'Romano' — flat Italian pod
Crop rotation
Pole beans belong to the pea family (Fabaceae). Fix nitrogen with soil bacteria. Plant heavy feeders where they grew last year. Relatives that count as the same family for rotation: bush bean, pea.
Frequently asked questions
When should I plant pole beans?
What grows well with pole beans?
What should not be planted with pole beans?
How far apart should I plant pole beans?
How long do pole beans take to grow?
Can pole beans handle frost?
Sources
- Frost dates: NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020.
- Hardiness zones: 2023 USDA Plant Hardiness Zone Map, USDA-ARS and PRISM Climate Group, Oregon State University.
- Planting windows and spacing: Vegetable Planting Guide (GardenNotes #720), Colorado State University Extension, and other land-grant extension guides.
- Food Yields and Nutrient Analyses of the Three Sisters, Jane Mt. Pleasant, Ethnobiology Letters 7(1), 2016
- Gardening with Companion Plants (EM128E), Linda Chalker-Scott, Washington State University Extension, 2023
- Beans in the Garden — Utah State University Extension