Potentilla 'William Rollison' (Cinquefoil 'William Rollison')

Botanical name

Potentilla 'William Rollison'

Other names

Cinquefoil 'William Rollison'

Genus

Potentilla Potentilla

Variety or Cultivar

'William Rollison' _ P. 'William Rollison' is an herbaceous perennial with dark green, divided foliage and orange-red flowers with yellow markings in summer.

Foliage

Deciduous

Habit

Clump-forming

Awards

RHS AGM (Award of Garden Merit)

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Colour

Flower

Orange-red, Yellow in Summer

Foliage

Dark-green in Summer

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How to care

Watch out for

Pests

Generally pest-free

Diseases

Generally disease-free

General care

Propagation methods

Division

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Monthly care advice

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Where to grow

Potentilla 'William Rollison' (Cinquefoil 'William Rollison') will reach a height of 0.45m and a spread of 1m after 2-5 years.

Suggested uses

Beds and borders, City, Cottage/Informal, Gravel, Low Maintenance

Cultivation

Plant in poor or moderately fertile, free-draining soil in a sunny position.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

South

Exposure

Exposed, Sheltered

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

Hardy (H4)

Defra's Risk register #1

Plant name

Potentilla 'William Rollison' (Cinquefoil 'William Rollison')

Common pest name

grape ground pearl

Scientific pest name

Margarodes vitis

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

Main pathway; Vitis spp. plants for planting; already prohibited. However; further consideration of other pathways is required.

Defra's Risk register #2

Plant name

Potentilla 'William Rollison' (Cinquefoil 'William Rollison')

Common pest name

Lance nematode; Nematode; Lance

Scientific pest name

Hoplolaimus spp.

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

Nematode species potentially affecting a wide variety of crops; prohibition of soil likely to mitigate risk substantially; keep under review in light of interceptions or findings should they occur in the EU.

Defra's Risk register #3

Plant name

Potentilla 'William Rollison' (Cinquefoil 'William Rollison')

Common pest name

Scientific pest name

Orgyia thyellina

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 from Eastern Asia which could be damaging to broadleaf and coniferous species if introduced to the UK; as well as having human health impacts. The main pathway is likely to be on goods (including non-plant material) imported from Eastern Asia and awareness raising with the main industry sectors is recommended.

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/