How to Grow Scarlet Runner Bean: Edible Ornamental Vine for Flowers and Food

How to Grow Scarlet Runner Bean

Scarlet Runner Bean (Phaseolus coccineus) is a dual-purpose star: a gorgeous, fast-climbing (6–9 feet) ornamental with profuse red-and-white flowers, and a vegetable crop. The young pods are edible (toughen quickly); mature beans must be cooked thoroughly. Perfect for trellises, fences, and bamboo teepees where both flowers and harvest are accessible.

Propagation

Sow directly after last frost—beans hate cold soil. Germinates in under a week in warm soil (10–15 days typical). Do not plant early.

How to Grow Scarlet Runner Bean

• Light: Full sun.
• Soil: Rich, amended with compost.
• Water & Feed: Heavy drinkers and feeders. Water deeply; fertilize monthly. High-phosphorus before bloom.
• Support: Provide sturdy trellis/fence at planting.
• Maintenance: Mulch heavily. Weed early; later vines shade out weeds. Frost-tender—cover if cold threatens.

Harvest

Pick young pods for eating (cook well). Continuous picking encourages more flowers and beans. Mature beans are dried for storage.

Pests & Diseases

Beetles (Sevin/Diazinon), rabbits (fence essential), deer (fence/netting), fungal diseases in wet weather—space well, keep leaves dry, fungicide as needed.