French Bean

One of the easiest and most productive crops for a UK summer. Sow after the last frost, keep picking, and they'll produce armfuls of pods from July through September.

Sprouting this month

First sprouts in 5–8 days

Sow

Apr – Jun

Plant Out

May – Jun

Harvest

Jul – Sep

Location

Indoor & Outdoor

Difficulty

Now is a good time to sow French Bean. Follow the sowing guide below.

Growing Calendar

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sow

Transplant

Harvest

This month: May

Log to journal

Start seeds indoors this week

•Fill tray with compost
•Sow seeds evenly
•Cover lightly with soil
•Water gently
•Place in warm light spot

Sowing Guide

What you'd find on the seed packet

Sow Depth

5cm

Spacing

15cm between plants, 45cm between rows

Germination

5–8days

Thinning

Not required if sown at final spacing

Grower's Note

Choose climbing varieties (Cobra, Blauhilde) for bigger yields in a smaller footprint. Dwarf varieties (The Prince, Speedy) work well in containers and need no staking. Sow a second batch 3 weeks after the first for a continuous harvest.

Planting Out Guide

Best spaces, conditions and how to plant out

Plant Spacing

15cm (in rows 45cm apart)

Best Grown In

Raised beds, large containers, open ground

Conditions

Full sun, sheltered. Well-drained, fertile soil or compost. Do not plant out before the last frost.

Grower's Note

Pre-warming the soil with black plastic before planting boosts establishment speed. Water well once flowering begins to set pods.

Growing Stages

Approximate weeks from sowing to harvest

Sprouting

1wks

Seeds germinate and first leaves emerge. Keep warm and moist.

Establishing

4wks

Root system develops and plant builds structure. Pot on if needed.

Maturing

8wks

Plant reaches full size and begins producing. Harvest at peak.

Total~13 weeksfrom seed to harvest

Companion Plants

Plant these nearby for natural pest control, better yields, and healthier soil.

Carrot

Cucumber

Peas

Marigold

Summer savory

Repels Pests

Climate Control

Today

—C

Humidity

—%

Water

Every 2–3 days

Sunlight

6+ hours direct sun

Watch Out For

Blackfly colonises growing tips in warm weather

pinch out affected tips and allow natural predators time to move in before reaching for a spray

Poor pod-set in hot dry spells

water consistently at the base during flowering and never wet the foliage overhead

Slugs destroy seedlings overnight

protect with copper tape or grit and transplant only once plants are at least 8–10cm tall

Pests & Problems

Full guide →

Black Bean Aphid

Black clusters on shoot tips and under leaves

Jun–Aug

Slugs

Seedlings destroyed

Apr–Jun

Bean Seed Fly

Seeds fail to germinate or seedlings collapse

Apr–Jun

What You'll Need

Equipment for growing french bean

Organic Seeds — Just Seed

Certified organic, open-pollinated

Pea & Bean Netting

Jute support for climbers

Bamboo Canes

Pack of 20 × 120cm

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Grown Organically

Every method in this guide works with natural systems — no synthetic chemicals, no shortcuts.

Read our approach

Common Questions

About growing French Bean in the UK

When can I plant French beans outside in the UK?

Plant French beans outside from late May to June, after the last frost. They are frost-tender and will be killed by even a light frost. Start indoors in April for an earlier crop that can be planted out once conditions are safe.

What is the difference between climbing and dwarf French beans?

Dwarf (bush) varieties grow to about 45cm and need little or no support. Climbing varieties grow to 1.5–2m and need a support framework. Climbers generally produce higher yields over a longer period; dwarf types are more convenient for containers and raised beds.

Why are my French bean pods tough and stringy?

Pods become tough and develop strings when left on the plant too long. Harvest when pods are slim and snap cleanly — before seeds become visible as bumps along the length. Check plants every 2–3 days in peak season.

Can I grow French beans in containers?

Dwarf varieties grow well in large containers (at least 30cm deep). Use a rich, well-draining compost and water regularly. A 40–50cm container can support 3–4 dwarf plants for a productive harvest.

Member guides

There's more to growing French Bean than this guide covers.

Seasonal reminders, deeper guides, and the small adjustments that change a harvest.

See what's included