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Annual BiennialClimber Wall Shrub

Phaseolus coccineus 'Red Knight'

bean (runner) 'Red Knight'

'Red Knight' is a vigorous, twining climber grown as an annual, with bright green, heart-shaped leaves and orange-red flowers in summer. These are followed by long, straight, green pods, eaten young as runner beans

Size
Ultimate height
1.5–2.5 metres
Time to ultimate height
1 year
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Alkaline
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Red Green Green
Autumn Red Green Green
Winter
Position
  • Full sun
Aspect

South–facing or West–facing

Exposure
Sheltered
Hardiness
H2
Botanical details
Family
Fabaceae
Native to the UK
No
Foliage
Deciduous
Habit
Climbing
Potentially harmful
Raw pods/beans harmful if eaten. Wear gloves and other protective equipment when handling
Genus

Phaseolus are annual or perennial legumes, usually climbing or trailing in form, and with trifoliate leaves. Grown as crop plants for their edible seeds, including runner, French and lima beans, as well as for animal feed, green manures and as ornamentals

Name status

Accepted

How to grow

Cultivation

Start from seed in a heated greenhouse or on a warm windowsill. Plant outside once all risk of frost has passed in a warm, sunny, sheltered site; incorporate well-rotted manure into soil before planting and keep the soil moist when plants are flowering to ensure good fruit set. Plants need substantial supports. See runner-bean cultivation for further advice

Propagation

Propagate by seed. See sowing vegetable seeds

Suggested planting locations and garden types
  • Wall side borders
Pruning

Remove tips of shoots once they reach the top of the support

Pests

May be susceptible to black bean aphids. Young plants also need protection from slugs and snails

Diseases

Generally disease-free but may be susceptible to foot rot

Get involved

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