Euphorbia x pasteurii 'Roundway Titan' (Spurge 'Roundway Titan' )

Botanical name

Euphorbia x pasteurii 'Roundway Titan'

Other names

Spurge 'Roundway Titan'

Genus

Euphorbia Euphorbia

Variety or Cultivar

'Roundway Titan' _ 'Roundway Titan' is a vigorous, upright to spreading, evergreen shrub bearing whorls of narrowly lance-shaped, yellow- to mid-green leaves with prominent, pale yellow-green midribs, the entire leaf turning red in autumn, older leaves tipped red all year. Clusters of tiny, fragrant, yellow-green flowers with prominent bracts from late spring to late summer are followed by yellow-green, berry-like fruit.

Foliage

Evergreen

Fragrance

Flower are honey-scented.

Habit

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

Mid-green, Flushed red, Yellow-green in Spring; Flushed red, Yellow-green, Mid-green in Summer; Flushed red, Yellow-green in Autumn; Red in Winter

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How to care

Watch out for

Pests

Generally pest-free.

Diseases

Generally disease-free.

General care

Pruning

Cut spent flower shoots to ground level in late summer or autumn.

Propagation methods

Basal cuttings

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Monthly care advice

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Where to grow

Euphorbia x pasteurii 'Roundway Titan' (Spurge 'Roundway Titan' ) will reach a height of 1m and a spread of 1.5m after 2-5 years.

Suggested uses

Flower Arranging, Containers, Beds and borders, Architectural, Mediterranean

Cultivation

Grow in light, well-drained soil in full sun. Protect with a thick, dry mulch in winter. In areas with cold winters, grow in a container and overwinter indoors.

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), Tender in frost (H3)

USDA zones

Zone 10, Zone 9, Zone 8

Defra's Risk register #1

Plant name

Euphorbia x pasteurii 'Roundway Titan' (Spurge 'Roundway Titan' )

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 x pasteurii 'Roundway Titan' (Spurge 'Roundway Titan' )

Common pest name

cotton mealybug

Scientific pest name

Phenacoccus solenopsis

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

Watching brief for potential impact on tomato production in the Mediterranean. Other southern European countries likely to be more at risk. Precautionary action will be taken on findings on planting material to protect glasshouse crops and botanical gardens.

Defra's Risk register #3

Plant name

Euphorbia x pasteurii 'Roundway Titan' (Spurge 'Roundway Titan' )

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/