Geranium nodosum 'Swish Purple' (Knotted cranesbill 'Swish Purple')

Botanical name

Geranium nodosum 'Swish Purple'

Other names

Knotted cranesbill 'Swish Purple', Geranium nodosum dark-flowered, Geranium nodosum 'Dark Form'

Genus

Geranium Geranium

Variety or Cultivar

'Swish Purple' _ 'Swish Purple' is a compact, clump- or mound-forming, rhizomatous perennial with lobed, finely-toothed, glossy, bright green leaves and loose clusters of open, funnel-shaped, veined, deep purple flowers from late spring into autumn.

Foliage

Deciduous

Habit

Clump-forming, Compact, Cushion or Mound Forming

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Colour

Flower

Veined, Purple in Spring; Purple, Veined in Summer; Purple, Veined in Autumn

Foliage

Bright-green in Spring; Bright-green in Summer; Bright-green in Autumn

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How to care

Watch out for

Specific pests

Sawflies , Capsid bug , Vine weevil

Specific diseases

Downy mildew , Powdery mildew

General care

Pruning

Remove old flowers and leaves to encourage the production of new growth.

Propagation methods

Basal cuttings, Seed

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Monthly care advice

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Where to grow

Geranium nodosum 'Swish Purple' (Knotted cranesbill 'Swish Purple') will reach a height of 0.45m and a spread of 0.5m after 2-5 years.

Suggested uses

Cottage/Informal, Beds and borders, Ground Cover, Low Maintenance, Rock, Wildflower, Wildlife, Woodland

Cultivation

Grow in well-drained or moist but well-drained soil in full sun to full shade. Excellent as a ground cover in dry, shady areas. Mulch in winter in cold areas.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Shade, Full Sun

Aspect

North, South, East, West

Exposure

Exposed, Sheltered

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

Hardy (H4)

USDA zones

Zone 9, Zone 8, Zone 7

Defra's Risk register #1

Plant name

Geranium nodosum 'Swish Purple' (Knotted cranesbill 'Swish Purple')

Common pest name

Green semi-looper

Scientific pest name

Chrysodeixis eriosoma

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)

3

General biosecurity comments

Polyphagous moth pest which is morphologically identical to a pest already established in the UK in protected environments and being controlled by IPM. Not expected to cause greater impacts than other species of Chrysodeixis in the UK.

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