Prunella grandiflora violet-flowered (Prunella x webbiana)

Botanical name

Prunella grandiflora violet-flowered

Other names

Prunella x webbiana

Genus

Prunella Prunella

Species

P. grandiflora violet-flowered - P. grandiflora violet-flowered is a spreading, mat-forming semi-evergreen perennial with violet coloured flowers in mid-summer.

Foliage

Semi evergreen

Habit

Creeping, Spreading

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Colour

Flower

Violet in Summer

Foliage

Green in All seasons

General care

Pruning

Deadhead to prevent self-seeding, as often considered invasive.

Propagation methods

Division, Seed

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Monthly care advice

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Where to grow

Prunella grandiflora violet-flowered (Prunella x webbiana) will reach a height of 0.3m and a spread of 0.5m after 2-5 years.

Suggested uses

Banks and Slopes, Cottage/Informal, Beds and borders, Ground Cover, Underplanting, Wildlife

Cultivation

Plant in full sun or part shade in most well-drained soils.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial 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)

Defra's Risk register #1

Plant name

Prunella grandiflora violet-flowered (Prunella x webbiana)

Common pest name

tomato thrips

Scientific pest name

Ceratothripoides brunneus

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

Thrips present in Africa; the Caribbean and parts of Asia; frequently intercepted in the UK. Can cause significant damage to tomatoes and other crops in countries where it is present. Europe wide PRA will consider its potential to establish and cause damage.

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/