Erysimum cheiri 'Vulcan' (Wallflower 'Vulcan')

Botanical name

Erysimum cheiri 'Vulcan'

Other names

Wallflower 'Vulcan', English wallflower 'Vulcan', Cheiranthus cheiri 'Vulcan'

Genus

Erysimum Erysimum

Variety or Cultivar

'Vulcan' _ 'Vulcan' is a compact, bushy, semi-evergreen perennial with linear, dark green leaves and erect racemes of fragrant, deep red flowers from mid-spring into summer.

Foliage

Semi evergreen

Fragrance

The flowers are slightly fragrant

Habit

Bushy, Compact

Colour

Flower

Dark-red in Spring; Dark-red in Summer

Foliage

Dark-green in All seasons

How to care

Watch out for

Specific pests

Flea beetles , Slugs , Snails

Specific diseases

Clubroot , Downy mildew

General care

Pruning

Trim lightly after flowering to prevent plants becoming leggy.

Propagation methods

Semi-hardwood cuttings

Monthly care advice

Where to grow

Erysimum cheiri 'Vulcan' (Wallflower 'Vulcan') will reach a height of 0.45m and a spread of 0.3m after 2-5 years.

Suggested uses

Coastal, Cottage/Informal, Beds and borders, Garden edging, Gravel, Mediterranean

Cultivation

Grow in poor, well-drained (ideally alkaline) soil, preferably in full sun. Will tolerate partial shade.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Well-drained

Soil pH

Alkaline, Neutral

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.

Tender in frost (H3)

USDA zones

Zone 10, Zone 9, Zone 8, Zone 7

Defra's Risk register #1

Plant name

Erysimum cheiri 'Vulcan' (Wallflower 'Vulcan')

Common pest name

Cassava whitefly; Cotton whitefly; Sweet potato whitefly; Tobacco whitefly

Scientific pest name

Bemisia tabaci non-European populations

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

Non-European populations of Bemisia tabaci pose an additional risk to European populations due to the potential for introducing non-European viruses.

Defra's Risk register #2

Plant name

Erysimum cheiri 'Vulcan' (Wallflower 'Vulcan')

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

Erysimum cheiri 'Vulcan' (Wallflower 'Vulcan')

Common pest name

Cassava whitefly; Cotton whitefly; Sweet potato whitefly; Tobacco whitefly

Scientific pest name

Bemisia tabaci European populations

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)

4

General biosecurity comments

The UK has a protected zone in place for this pest which helps to mitigate the risk of entry and establishment. An EFSA opinion is currently being discussed at the EU Annexes Working Group which recommends further strengthening of the regulation.

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/