Euphorbia characias subsp. wulfenii 'John Tomlison' (Mediterranean spurge 'John Tomlison')

Botanical name

Euphorbia characias subsp. wulfenii 'John Tomlison'

Other names

Mediterranean spurge 'John Tomlison', Spurge 'John Tomlison', Euphorbia characias subsp. wulfenii Kew form

Genus

Euphorbia Euphorbia

Variety or Cultivar

'John Tomlison' _ 'John Tomlison' is an erect, open, evergreen perennial with linear, grey-green leaves and, from spring into summer, large, rounded clusters of tiny flowers surrounded by prominent, bright yellow-green bracts.

Foliage

Evergreen

Habit

Open branches, Erect

Toxicity

All parts of the plant are highly toxic if ingested. The milky sap may cause irritation to skin and eyes.

Awards

RHS AGM (Award of Garden Merit)

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Colour

Flower

Yellow-green in Spring; Yellow-green in Summer

Foliage

Grey-green in All seasons

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How to care

Watch out for

Pests

Generally pest-free.

Specific pests

Aphids

Diseases

Generally disease-free.

General care

Pruning

Cut flowered shoots to ground level in late summer or early autumn.

Propagation methods

Division, Basal cuttings

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Monthly care advice

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Where to grow

Euphorbia characias subsp. wulfenii 'John Tomlison' (Mediterranean spurge 'John Tomlison') will reach a height of 1.2m and a spread of 1.2m after 2-5 years.

Suggested uses

Mediterranean, Low Maintenance, Ground Cover, Rock, Architectural, Gravel

Cultivation

Grow in light, well-drained soil in sun. If necessary, add grit or sharp sand to the soil to improve drainage. Dislikes winter wet, so a gravel mulch will help avoid rotting.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

South, East, West

Exposure

Sheltered

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

Hardy (H4)

USDA zones

Zone 8, Zone 7, Zone 6, Zone 5

Defra's Risk register #1

Plant name

Euphorbia characias subsp. wulfenii 'John Tomlison' (Mediterranean spurge 'John Tomlison')

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

Euphorbia characias subsp. wulfenii 'John Tomlison' (Mediterranean spurge 'John Tomlison')

Common pest name

pink wax scale; red was scale; ruby wax scale

Scientific pest name

Ceroplastes rubens

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

Based on its biology and low potential impact continued action on this pest in the UK would not be considered appropriate. It is likely to be of more concern to southern Member States of the EU; as it is an economic pest of citrus.

Defra's Risk register #3

Plant name

Euphorbia characias subsp. wulfenii 'John Tomlison' (Mediterranean spurge 'John Tomlison')

Common pest name

Powdery mildew: cotton; Powdery mildew: eggplant; Powdery mildew: pepper; Powdery mildew: tomato

Scientific pest name

Leveillula taurica

Type

Fungus

Current status in UK

Present (Limited)

Likelihood to spread in UK (1 is very low - 5 is very high)

3

Impact (1 is very low - 5 is very high)

3

General biosecurity comments

Believed to be present and no statutory action is being taken. Status needs to be confirmed by survey.

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/