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Geranium nodosum (Knotted cranesbill)
1 hour care
per year
per year
0.4m
Max height
Max height
0.5m
Max spread
Max spread
2-5 years
To maturity
To maturity
Plant details
Botanical name
Geranium nodosum
Other names
Knotted cranesbill, Hardy geranium
Genus
Geranium Geranium
Species
G. nodosum - G. nodosum is a clump-forming, rhizomatous perennial with lobed, toothed, glossy, bright green leaves and, from late spring to early autumn, red-flushed stems bearing loose clusters of open, funnel-shaped, veined, purple-pink flowers with pale pink centres and notched petals.
Geranium nodosum is: Deciduous
Habit
Clump-forming
Flower
Purple-pink, Veined in Spring; Veined, Purple-pink in Summer; Veined, Purple-pink in Autumn
Foliage
Bright-green in Spring; Bright-green in Summer; Bright-green in Autumn
How to care
Watch out for
Specific pests
Capsid bug , Sawflies , Vine weevil Capsid bug , Sawflies , Vine weevil
Downy mildew , Powdery mildew 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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Where to grow
Geranium nodosum (Knotted cranesbill) will reach a height of 0.4m and a spread of 0.5m after 2-5 years.
Suggested uses
Beds and borders, Cottage/Informal, 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.
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)
Companion plants
We do not currently have companion plants added for this plant.
Botanical name
Geranium nodosum
Other names
Knotted cranesbill, Hardy geranium
Genus
Geranium Geranium
Species
G. nodosum - G. nodosum is a clump-forming, rhizomatous perennial with lobed, toothed, glossy, bright green leaves and, from late spring to early autumn, red-flushed stems bearing loose clusters of open, funnel-shaped, veined, purple-pink flowers with pale pink centres and notched petals.
Foliage
Deciduous
Habit
Clump-forming
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Colour
Flower
Purple-pink, Veined in Spring; Veined, Purple-pink in Summer; Veined, Purple-pink in Autumn
Foliage
Bright-green in Spring; Bright-green in Summer; Bright-green in Autumn
How to care
Watch out for
Specific pests
Capsid bug , Sawflies , Vine weevil
Specific diseases
General care
Pruning
Remove old flowers and leaves to encourage the production of new growth.
Propagation methods
Basal cuttings, Seed
Monthly care advice
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Where to grow
Geranium nodosum (Knotted cranesbill) will reach a height of 0.4m and a spread of 0.5m after 2-5 years.
Suggested uses
Beds and borders, Cottage/Informal, 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.
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, Zone 6
Defra's Risk register #1
Plant name
Geranium nodosum (Knotted cranesbill)
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: 7th March 2019 For more information visit: https://planthealthportal.defra.gov.uk/
In order to add a note on this plant, please add this plant to your plant lists.
| This plant likes... | Garden match | |
| Soil types: | Chalky, Loamy, Sandy | Tell us... |
| Soil drainage: | Moist but well-drained, Well-drained | Tell us... |
| Soil pH: | Acid, Alkaline, Neutral | Tell us... |
| Light: | Partial Shade, Full Shade, Full Sun | Tell us... |
| Aspect: | North, South, East, West | Tell us... |
| Exposure: | Exposed, Sheltered | Tell us... |
| Hardiness: | Hardy (H4) | Tell us... |
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