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Juncus effusus f. spiralis (Corkscrew rush)
1 hour care
per year
per year
0.45m
Max height
Max height
0.6m
Max spread
Max spread
2-5 years
To maturity
To maturity
Plant details
Botanical name
Juncus effusus f. spiralis
Other names
Corkscrew rush, Scirpus lacustris 'Spiralis' , Juncus effusus 'Spiralis'
Genus
Juncus Juncus
Species
J. effusus f. spiralis - J. effusus f. spiralis is an evergreen perennial grown for its curious clumps of spiralling, leafless, dark-green stems. Flowers, if produced, are brown and insignificant.
Juncus effusus f. spiralis is: Evergreen
Habit
Clump-forming
Flower
Insignificant or absent, Brown in Summer
How to care
Watch out for
Pests
Generally pest-free
Diseases
Generally disease-free
General care
Pruning
Tidy by removing dead stems and any spent flowerheads in spring
Propagation methods
Division
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Where to grow
Juncus effusus f. spiralis (Corkscrew rush) will reach a height of 0.45m and a spread of 0.6m after 2-5 years.
Suggested uses
Aquatic, Bog garden, Waterside
Cultivation
Plant in the shallow margins of pools or consistently moist, acidic soil in full sun or partial shade.
Soil type
Clay, Loamy
Soil drainage
Boggy damp conditions, Moisture-retentive, Pond/In water
Soil pH
Acid
Light
Partial Shade, Full Sun
Aspect
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
Juncus effusus f. spiralis
Other names
Corkscrew rush, Scirpus lacustris 'Spiralis' , Juncus effusus 'Spiralis'
Genus
Juncus Juncus
Species
J. effusus f. spiralis - J. effusus f. spiralis is an evergreen perennial grown for its curious clumps of spiralling, leafless, dark-green stems. Flowers, if produced, are brown and insignificant.
Foliage
Evergreen
Habit
Clump-forming
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Colour
Flower
Insignificant or absent, Brown in Summer
How to care
Watch out for
Pests
Generally pest-free
Diseases
Generally disease-free
General care
Pruning
Tidy by removing dead stems and any spent flowerheads in spring
Propagation methods
Division
Monthly care advice
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Where to grow
Juncus effusus f. spiralis (Corkscrew rush) will reach a height of 0.45m and a spread of 0.6m after 2-5 years.
Suggested uses
Aquatic, Bog garden, Waterside
Cultivation
Plant in the shallow margins of pools or consistently moist, acidic soil in full sun or partial shade.
Soil type
Clay, Loamy
Soil drainage
Boggy damp conditions, Moisture-retentive, Pond/In water
Soil pH
Acid
Light
Partial Shade, Full Sun
Aspect
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, Zone 5, Zone 4
Defra's Risk register #1
Plant name
Juncus effusus f. spiralis (Corkscrew rush)
Common pest name
Scientific pest name
Xiphinema bricolense
Type
Nematode
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
EU regulated nematode pest with the potential to introduce non-European viruses. EU listing and regulations on soil/growing material associated with planting material help to mitigate the risk of entry.
Defra's Risk register #2
Plant name
Juncus effusus f. spiralis (Corkscrew rush)
Common pest name
Scientific pest name
Bactra bactrana
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)
3
General biosecurity comments
Moth whose larvae feed on sedge and grass stems; found (in 2014) to be damaging glasshouse peppers in Greece. Industry may wish to monitor for its presence.
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: | Clay, Loamy | Tell us... |
| Soil drainage: | Boggy damp conditions, Moisture-retentive, Pond/In water | Tell us... |
| Soil pH: | Acid | Tell us... |
| Light: | Partial Shade, Full Sun | Tell us... |
| Aspect: | South, East, West | Tell us... |
| Exposure: | Exposed, Sheltered | Tell us... |
| Hardiness: | Hardy (H4) | Tell us... |
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