Garden PlannerEvidence-aware. Garden with confidence.
Entire healthy mature pole beans plant in a real garden bed, showing growth habit and scale.Primary identification image. 180–300 cm tall, 30–30 cm wide at maturity.

Pole beans

Phaseolus vulgaris / P. coccineus L.

Also called: Climbing beans, Runner beans, Scarlet runner

Family
Fabaceae
Season
Warm-season annual (runner beans are tender perennials)
Best grown in
Portland, Oregon

Climbing beans yield far more per square metre than bush types but need a 2 m support and a long harvest season.

Safety: Cook dried beans thoroughly to destroy lectins.

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Life cycle & growth stages

  1. 1. SeedSow 4–5 cm deep at the base of supports.
  2. 2. SeedlingEmerges in 7–14 days.
  3. 3. ClimbingVines twine anticlockwise up supports.
  4. 4. FloweringFlowers at 6–8 weeks; runner beans need bees.
  5. 5. Developing podsPods lengthen quickly in warm weather.
  6. 6. Harvest readyPods smooth, 15–25 cm.
  7. 7. HarvestPick often; plants crop until frost.

Growth stages are ordered chronologically; timing varies with cultivar, temperature, light and care.

Planting calendar for Portland, Oregon

direct sow 1–4 weeks after last frost; 60–75 days to maturity from sowing. Windows are derived from the region's average frost dates (last Apr 5, first Nov 5) and are estimates until you confirm your own dates in the calendar.

Pole beansPhaseolus vulgaris / P. coccineus
PlantStart indoorsDirect sowAutumn sowTransplantTendHarvest
Pole beans—Apr 12–May 3 (estimate)——May 3–Jun 11 (estimate)Jun 11–Nov 5 (estimate)
  • Direct sow: Apr 12 – May 3
  • Tend and monitor: May 3 – Jun 11
  • Harvest: Jun 11 – Nov 5

Spacing & support

In-row 10–15 cm; rows 90–90 cm. Planner footprint: 1 cell of 30 cm, 6 plants per cell.

Side-profile diagram of mature pole beans: canopy 180–300 cm tall, 30–30 cm wide, medium root zone, support and harvest-access envelope.

Soil & water

Soil
Deep, rich, moisture-retentive soil
pH
6–7
Fertility
low
Water
Steady water once flowering starts; mulch.
Frost
tender; killed by frost

Support & training

Poles, teepee, netting or trellis at least 2 m tall. Install at planting so roots are not disturbed later.

Pole beans trained on its support: poles, teepee, netting or trellis at least 2 m tall.

Harvest signs

  • Pods 15–25 cm, smooth, before seeds bulge
  • Pick every 2–3 days to keep plants producing
Pole beans at harvest readiness, showing the visual cues: pods 15–25 cm, smooth, before seeds bulge; pick every 2–3 days to keep plants producing.

Common problems

Pests: aphids (especially black bean aphid), slugs, Mexican bean beetle

Diseases: rust, halo blight

Appearance alone is not a diagnosis; confirm with a regional extension guide.

Side-by-side: healthy pole beans leaf or fruit and an example of rust.

Container growing

  • Minimum 30 L (35 cm deep)
  • Use quality potting mix and water more frequently
  • A 30 L container with a sturdy teepee supports 4–6 plants.
Mature pole beans in a correctly sized container (30 L or more) with drainage visible.

Companion overview

5 reviewed relationship records (evidence: high).

Supported or conditional

Corn, Winter squash

Avoid or separate

None with evidence

Traditional claims only: Onion, Sunflower.

Full companion profile

Crop rotation

Avoid planting pole beans or other legume family crops in the same spot for 2 years. Rotation is about previous seasons, not about live neighbours.

Year 1Year 2Year 3FabaceaeOther familyOther familyback after 2+ years

Shared risks in Fabaceae: root rots (Fusarium, Pythium), bean rust, pea aphid.

Crop rotation hub

Sources, reviewer & update

Sources

Reviewer: Garden Planner editorial team (pending independent horticultural review)

Last reviewed: August 15, 2026 · version 1

Found an error or have feedback? Let us know.

Growing pole beans

Pole beans are sown after the soil warms, at the base of poles, a teepee, netting or corn stalks. They take 60–75 days to begin cropping and continue until frost if picked regularly, which makes one sowing enough.

Pole beans seed beside a ruler or coin for scale.
Pole beans seedling at cotyledon and first-true-leaf stage, in soil, distinguishable from common weeds.
Immature pods of pole beans developing on the plant.

The Three Sisters arrangement, in which beans climb corn while squash covers the ground, has been measured in field plots to produce more food energy per area than the same crops grown alone. The mechanism is physical support plus complementary canopies and ground cover; corn must be 30 cm tall before beans are sown or the beans overwhelm it.

Two or more mature pole beans plants with a tape measure showing in-row spacing (10–15 cm).
Pole beans flower detail or bolting stage.
Immature pods of pole beans developing on the plant.

Runner beans (P. coccineus) set pods poorly in heat above 30 °C and need bees for pollination; common pole beans self-pollinate.

Edible parts and safety

Edible: pods, seeds. Cook dried beans thoroughly to destroy lectins.

Hands or tool harvesting pole beans correctly (cut, pull, twist or pick) without damaging the plant.

Pests and diseases

Common pests: aphids (especially black bean aphid), slugs, Mexican bean beetle. Common diseases: rust, halo blight. These vary by region; a photograph is an example, not a diagnosis. See the pest and disease guides and your local extension service.

aphids on pole beans, with a wider damage-context view.

Timeline

Season timeline for pole beans: sowing, transplanting, flowering, harvest and bed occupancy aligned to frost dates.Text alternative: Direct sow Apr 12–May 3; Tend and monitor May 3–Jun 11; Harvest Jun 11–Nov 5.

Related plants

See also: Fabaceae family page · crop rotation · regional calendar · guides

Our Methodology & Sources

We synthesize peer-reviewed research, university extension publications, and trusted horticulture resources. Our evidence levels help you understand how strong the science is behind the guidance.

Evidence tiers

Supported evidenceConsistent results from multiple robust studies
Traditional claimHistorical use reported, limited scientific support
Context dependentMixed or variable results across conditions
No verified relationshipNo reliable evidence identified

Primary source types

  • Peer-reviewed journal articles
  • University extension publications
  • Government & research institute reports
  • Systematic reviews & meta-analyses

Last updated

August 24, 2026

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