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Phaseolus coccineus 'Scarlet Emperor' (Runner bean 'Scarlet Emperor')

Intermediate
skill rating
4 hours care
per year
3m
Max height
0.6m
Max spread
1-2 years
To maturity

Plant details

Botanical name

Phaseolus coccineus 'Scarlet Emperor'

Other names

Runner bean 'Scarlet Emperor', Scarlet runner 'Scarlet Emperor'

Genus

Phaseolus Phaseolus

Variety or Cultivar

'Scarlet Emperor' _ 'Scarlet Emperor' is a perennial climber (often treated as an annual) with red flowers and long, green, stick runner beans. 'Scarlet Emperor' is good for freezing and exhibition.


Phaseolus coccineus 'Scarlet Emperor' is: Deciduous

Fragrance

Strongly scented flowers.

Habit

Climbing

Flower

Bright-red in Summer

Foliage

Grey-green in Summer

How to care

Watch out for

Specific pests

Aphids , Bean seed fly , Pea and bean weevil , Seed beetle , Slugs , Snails , Thrips Aphids , Bean seed fly , Pea and bean weevil , Seed beetle , Slugs , Snails , Thrips

Chocolate spot , Downy mildew , Foot and root rot , Halo blight , Powdery mildew Chocolate spot , Downy mildew , Foot and root rot , Halo blight , Powdery mildew

General care

Pruning

Shade will be cast by these tall, dense plants. Provide strong, rigid support for growing stems. As they grow, ensure the plants continue to twine around their canes. Remove the growing point once the plant has reached the top of the supports.

Propagation methods

Seed


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Where to grow

Phaseolus coccineus 'Scarlet Emperor' (Runner bean 'Scarlet Emperor') will reach a height of 3m and a spread of 0.6m after 1-2 years.

Suggested uses

Add to salads, Beds and borders, Flower Arranging, Wallside and trellises

Cultivation

Plant in fertile, but well-drained soil in full sun or light shade. Choose a spot which did not have beans last year. Incorporate well-rotted organic manure before planting and apply a general purpose fertilizer 1 week before planting.

Soil type

Loamy, Sandy

Soil drainage

Well-drained

Soil pH

Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

South, West

Exposure

Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

Companion plants

We do not currently have companion plants added for this plant.

Botanical name

Phaseolus coccineus 'Scarlet Emperor'

Other names

Runner bean 'Scarlet Emperor', Scarlet runner 'Scarlet Emperor'

Genus

Phaseolus Phaseolus

Variety or Cultivar

'Scarlet Emperor' _ 'Scarlet Emperor' is a perennial climber (often treated as an annual) with red flowers and long, green, stick runner beans. 'Scarlet Emperor' is good for freezing and exhibition.

Foliage

Deciduous

Fragrance

Strongly scented flowers.

Habit

Climbing


Colour

Flower

Bright-red in Summer

Foliage

Grey-green in Summer


How to care

Watch out for

Specific pests

Aphids , Bean seed fly , Pea and bean weevil , Seed beetle , Slugs , Snails , Thrips

Specific diseases

Chocolate spot , Downy mildew , Foot and root rot , Halo blight , Powdery mildew

General care

Pruning

Shade will be cast by these tall, dense plants. Provide strong, rigid support for growing stems. As they grow, ensure the plants continue to twine around their canes. Remove the growing point once the plant has reached the top of the supports.

Propagation methods

Seed


Monthly care advice


Where to grow

Phaseolus coccineus 'Scarlet Emperor' (Runner bean 'Scarlet Emperor') will reach a height of 3m and a spread of 0.6m after 1-2 years.

Suggested uses

Add to salads, Beds and borders, Flower Arranging, Wallside and trellises

Cultivation

Plant in fertile, but well-drained soil in full sun or light shade. Choose a spot which did not have beans last year. Incorporate well-rotted organic manure before planting and apply a general purpose fertilizer 1 week before planting.

Soil type

Loamy, Sandy

Soil drainage

Well-drained

Soil pH

Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

South, West

Exposure

Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

Defra's Risk register #1

Plant name

Phaseolus coccineus 'Scarlet Emperor' (Runner bean 'Scarlet Emperor')

Common pest name

Scientific pest name

Prodiplosis longifila

Type

Insect

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

3

Impact (1 is very low - 5 is very high)

5

General biosecurity comments

Polyphagous gall midge present in the Americas; where it causes damage to outdoor and glasshouse crops. Europe-wide PRA will consider its potential to establish and cause damage.

Defra's Risk register #2

Plant name

Phaseolus coccineus 'Scarlet Emperor' (Runner bean 'Scarlet Emperor')

Common pest name

Cassava whitefly; Cotton whitefly; Sweet potato whitefly; Tobacco whitefly

Scientific pest name

Bemisia tabaci non-European populations

Type

Insect

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

5

General biosecurity comments

Non-European populations of Bemisia tabaci pose an additional risk to European populations due to the potential for introducing non-European viruses.

Defra's Risk register #3

Plant name

Phaseolus coccineus 'Scarlet Emperor' (Runner bean 'Scarlet Emperor')

Common pest name

Beet leafhopper; Leafhopper; beet

Scientific pest name

Circulifer tenellus

Type

Insect

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

4

General biosecurity comments

Pest of solanaceous crops; brassica and sugar beet; present in parts of the EU. Limited potential to establish in the UK; with some uncertainty. EU regulatory status is under review.

About this section

Our plants are under greater threat than ever before. There is increasing movement of plants and other material traded from an increasing variety of sources. This increases the chances of exotic pests arriving with imported goods and travellers, as well as by natural means. Shoot is working with Defra to help members to do their part in preventing the introduction and spread of invasive risks.

Traveling or importing plants? Please read "Don't risk it" advice here

Suspected outbreak? Click here for contact details to report to the relevant authority.

Date updated: 7th March 2019 For more information visit: https://planthealthportal.defra.gov.uk/

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This plant likes... Garden match
Soil types: Loamy, Sandy Tell us...
Soil drainage: Well-drained Tell us...
Soil pH: Alkaline, Neutral Tell us...
Light: Partial Shade, Full Sun Tell us...
Aspect: South, West Tell us...
Exposure: Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

DISCUSS THIS PLANT

Scarlet Runner Flowering Bean

Are the long slender beans edible and if so when should they be harvested? read more

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