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Vigna unguiculata subsp. sesquipedalis

Yardlong Beans

Yardlong Beans growing guidance with clear planting, care and harvest expectations.

Grows in Zones 4–12Growing guide
Yardlong Beans growing or ready to harvestPhoto: Forest & Kim Starr · CC BY 3.0

Set your expectations

How long until you can harvest?

50–90 days from seed
Cold-weather notePeas tolerate cool weather; beans are damaged by frost.
Start withSeeds planted directly in the garden
Life cycleAnnual
DifficultyEasy

Your seasonal plan

When to grow yardlong beans in Zone 6.

Planting usually begins later in spring than it does in warmer zones. These are useful planning windows, not exact weather guarantees.

Typical planting windowApril–June
Typical harvest windowJune–September

Growing essentials

What yardlong beans need to thrive.

Use the practical details below with your Zone 6 timeline. Current weather and the variety you choose can shift timing.

LightFull sun
SoilWell-drained soil with moderate fertility, pH about 6.0–7.0
Planting depth1 in
Spacing6–8 in with trellis
WaterKeep evenly moist during flowering and pod fill; water at soil level.
Best conditionsMatch the crop to the season: peas and favas prefer cool weather; beans and cowpeas need warmth.

How to plant

Plant it well.

Plant seeds directly in the garden; peas and beans dislike root disturbance. Install support before vining types begin to climb.

Indoors or containers

Best outdoors. Dwarf types can grow in deep containers with strong light and a trellis.

Keep it growing

Care through the season.

  • Avoid excess nitrogen, which produces leaves instead of pods.
  • Guide vines onto support and keep pods picked to extend production.
  • Rotate away from other legumes when practical.
What to avoid

Too much nitrogen produces many leaves but fewer pods.

Ready to harvest

Know the cue, not just the date.

  • Pick slender pods at 12–18 inches before seeds swell; harvest frequently.
  • Harvest during the cool part of the day when practical. Use clean tools, then cool, store or use the harvest promptly.

How we know

Sources and growing guidance.

The growing essentials and seasonal planning windows are original summaries informed by university Extension references; always adjust for current local weather and variety instructions.

Vegetable planting and garden planningUniversity of Minnesota ExtensionFlorida Vegetable Gardening GuideUniversity of Florida IFAS Extension

Growing essentials compiled · November 2026