Common Bean
Phaseolus vulgaris
L. Species
- Botanical name
- Phaseolus vulgaris
- Also known as
- Bean, Common Bean, Common Haricot, Common-Bean, Dwarf Bean, Frash Bean, French Bean, French-Bean, Garden Bean, Green Bean, Haricot Bean, Kidney Bean, Kidney-Bean, Runner Bean, String Bean
- Family
- Fabaceae
- Genus
- Phaseolus
- Flowering period
- July to September
- Height
- 45–240 cm
- Spread
- 30–45 cm
- Hardiness
- Tender (RHS H1c)
- Reference
- World Flora Online
How to grow Common Bean
Planting
Sow in pots under cover from mid-April, or direct outdoors from late May once the soil has warmed and frost risk has passed. Cold wet soil rots the seed. Dig in plenty of garden compost the previous autumn or winter. Climbing forms need a wigwam or double row of canes about 2 m tall before planting.
Pruning
No pruning as such. Pinch out the tips of climbing beans when they reach the top of their supports. Pick pods young and often — once beans are allowed to swell and mature, cropping stops.
Propagation
From seed each year. Saved seed comes reasonably true as beans are largely self-pollinating, though it may carry seed-borne disease.
Pests and diseases
Slugs and snails destroy young plants and are the main early threat. Blackfly cluster on shoot tips. Halo blight and anthracnose show as spotting on leaves and pods and are usually seed-borne, so do not save seed from affected plants.
Value to wildlife
Flowers are visited by bumblebees, which help set the crop.
Notes
Beans are shallow-rooted and drop flowers in drought, so keep watering steady from flowering onwards. A mulch after the soil has warmed helps a great deal.
This guidance was researched and written by GardenDecoded — see our editorial policy for how guides are checked and reviewed.
Other names for this plant
These names have all been used for Phaseolus vulgaris but are no longer the accepted name. You may still meet them on old labels, in books, or in nursery catalogues.
Others in Phaseolus
GardenDecoded is an educational gardening reference. Botanical data comes from World Flora Online and GBIF; growing guidance is our own. Always check a plant's toxicity and local invasiveness status before planting, and never eat or apply a plant based on this site alone.