Runner Bean

A different species from common beans

Runner beans (Phaseolus coccineus) are a different species from the common bean (Phaseolus vulgaris — green beans, kidney beans, black beans). The two species share a genus and many similarities, but have distinct genetic and culinary characteristics:

• Runner beans — perennial in tropical climates; large pods (15-30 cm); long climbing vines
• Common beans — annual; smaller pods; both pole and bush forms

The seed inside is also different — runner bean seeds are typically larger and often beautifully marbled.

Britain’s favorite garden bean

In British vegetable gardens, runner beans are the dominant climbing bean variety — cultivated for centuries, deeply embedded in the British gardening tradition. The bean climbs up bamboo or hazel pole structures (called “bean poles”), producing prolific yields throughout summer.

The Scarlet Runner variety is particularly beloved for its bright red flowers — the plant doubles as an ornamental annual on a teepee structure or trellis. Many British gardens grow scarlet runners as much for the flower display as for the harvest.

A British vegetable preparation

The classic British runner bean preparation is straightforward:

1. Slice each pod into 2-3 cm bite-size pieces (some recipes call for diagonal slices)
2. Boil briefly (3-5 minutes) until tender-crisp
3. Drain and toss with butter, salt, and pepper

This humble preparation has been essentially unchanged for centuries and remains the most common runner bean treatment in British home cooking. Some cooks add lemon juice or chopped parsley for variation, but the core dish stays consistent.

A Central American native

Despite their British garden association, runner beans are actually Mexican in origin — domesticated in the Central American highlands by Aztec and pre-Aztec cultures. Spanish colonizers brought the seeds to Europe in the 1500s.

In Mexico, runner beans (called ayocote) are still cultivated as a traditional crop, used in stews and as dried beans. The Oaxacan dish chichilo sometimes incorporates runner beans, alongside the more typical black or pinto beans.

Both pod and bean

Like most pod-bearing legumes, runner beans offer two distinct culinary stages:

• Young pods — eaten fresh, like green beans, with the immature seeds inside
• Mature seeds — shelled from older pods, dried, and used like other beans

The young pods are by far the more common use in Britain. Mature runner bean seeds, while edible, are less popular than common bean varieties for dry-bean cooking — they’re slightly tougher and less flavorful than the more familiar pinto, kidney, or black beans.

Cool-climate friendly

Runner beans prefer cool weather more than most beans — they grow best at moderate temperatures and stop flowering in hot dry spells. This makes them well-suited to British, Northern European, and Pacific Northwest gardens where summer temperatures stay moderate.

In hot southern American climates, runner beans often disappoint home gardeners by failing to set pods during heat waves. Better-suited bean varieties for hot summers include yardlong beans and various Southern peas.