Beans are among the most productive crops in the UK kitchen garden. Whether you grow runner beans, French beans, or broad beans, the right timing and a regular picking routine will keep them producing for months.
Founder & Head Grower, SoilCommander · RHS Level 2 · 12+ years growing in Yorkshire
I’ve been growing vegetables on my Yorkshire allotment and raised beds since 2012. Everything I write is based on what I’ve actually grown, failed at, and eventually got right in a real UK climate.
Three Types of Beans
Hardy, earliest harvest
The hardiest bean — sow in autumn or early spring. Ready from May–July. Tall plants needing support. Blackfly is the main pest.
Heaviest cropper
Climbing, tender annual. Sow May–June, harvest July–October. Needs tall support (2m+). Most productive bean for UK conditions.
Versatile, no strings
Dwarf or climbing. Sow May–July, harvest July–October. No stringing required. Good for containers and smaller plots.
UK Sowing & Harvest Calendar
| Bean Type | Sow | Harvest | Notes |
|---|---|---|---|
| Broad beans (autumn) | Oct–Nov | May–Jun | Hardy varieties only; earliest harvest |
| Broad beans (spring) | Feb–Apr | Jun–Jul | More reliable in colder or wetter areas |
| Runner beans | May–Jun (indoors Apr) | Jul–Oct | After last frost only; needs 2m support |
| French beans (dwarf) | May–Jul | Jul–Oct | Direct sow or transplant; no support needed |
| French beans (climbing) | May–Jun | Jul–Oct | Needs 1.5–2m support |
Broad Beans
Sow broad beans in double rows, 20–23cm apart, 5cm deep. Autumn-sown plants (October–November) overwinter as small seedlings and give the earliest crops. Spring sowing (February–April) is safer in wet or cold regions. Pinch out the soft growing tips once 4–6 flowers are visible at the base — this reduces blackfly and concentrates energy into pod development. The RHS recommends staking rows to prevent wind damage.
Runner Beans
Runner beans are the UK’s most productive climbing vegetable. Erect supports first (2–2.4m canes or poles) then sow or transplant. Sow directly outside from late May after the last frost, or start indoors in April and transplant. Space plants 15–20cm apart. Water consistently once pods form — irregular watering causes stringy, tough beans. Pick every 2–3 days when pods are 15–20cm long. Never let pods mature on the plant — it signals the plant to stop producing.
French Beans
French beans are easier than runner beans — shorter growing season, no stringing, and dwarf varieties need no support. Sow directly outside from late May (soil must be at least 12°C) through July. Succession sow every 3 weeks for a continuous harvest. Harvest when pods are 10–15cm long, before the beans inside swell. Regular picking is essential to keep plants productive.
Common Problems
Blackfly on broad beans: Colonies cluster on growing tips. Pinch out tips once 4–6 flowers are open. Spray with soapy water for minor infestations.
Runner beans failing to set pods: Usually caused by hot, dry conditions preventing pollination. Water consistently and provide light shade in extreme heat. Planting near bee-friendly flowers improves pollination.
Slugs on French and runner beans: Most damaging at seedling stage. Protect young plants with slug barriers or organic pellets.
Plan Your Full Bean Season
The SoilCommander UK Vegetable Garden Planner covers broad beans, runner beans, and French beans with monthly sowing guides, variety recommendations, and harvest planners.
Get the UK Garden Planner →When can I sow runner beans outside?
From late May after the last frost, when soil is at least 12°C. Runner beans are frost-tender — even a light frost kills young plants. Starting indoors in April gives a 2–3 week head start.
Why are my runner beans not producing pods?
Most often caused by hot, dry weather reducing pollination. Water consistently, mulch to retain moisture, and plant near pollinator-attracting flowers. Regular picking also encourages further production.
Do French beans need support?
Dwarf varieties (The Prince, Safari, Purple Teepee) are self-supporting and need no staking. Climbing varieties (Cobra, Blue Lake, Blauhilde) need 1.5–2m supports.
Can I grow runner beans in containers?
Yes, but containers must be large (at least 30cm diameter per plant) and watered daily. Use a large patio pot or raised bed with tall cane support. Feed weekly once pods begin to form.
Browse sowing dates for all crops in the UK vegetable planting calendar or explore all UK vegetable growing guides.
Tools That Help With This Crop
Use these links when the guide moves from reading into sowing, planting, watering, and keeping the crop healthy.
Plan the next step
Use the printable UK Vegetable Garden Planner to turn this guide into sowing dates, bed layouts, and weekly garden tasks.