Euphorbia palustris (Marsh spurge)

Botanical name

Euphorbia palustris

Other names

Marsh spurge

Genus

Euphorbia Euphorbia

Species

E. palustris - E. palustris is a clump-forming perennial with upright stems clothed with narrow mid-green leaves that may become orange-tinted in autumn. In late spring, it bears terminal clusters of greenish yellow flowers.

Foliage

Deciduous

Habit

Bushy, Clump-forming

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

Foliage

Bright-green in Spring; Bright-green in Summer; Orange, Yellow in Autumn

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How to care

Watch out for

Pests

Generally pest-free.

Diseases

Generally disease-free.

General care

Propagation methods

Basal cuttings, Division, Seed

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Monthly care advice

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Where to grow

Euphorbia palustris (Marsh spurge) will reach a height of 1m and a spread of 1m after 2-5 years.

Suggested uses

Beds and borders, Containers, Cottage/Informal, Mediterranean, Waterside

Cultivation

Plant in permanently moist soil in full sun.

Soil type

Clay, Loamy

Soil drainage

Moisture-retentive

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

South, West

Exposure

Exposed, Sheltered

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

Hardy (H4)

USDA zones

Zone 9, Zone 8, Zone 7, Zone 6, Zone 5

Defra's Risk register #1

Plant name

Euphorbia palustris (Marsh spurge)

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 palustris (Marsh spurge)

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 palustris (Marsh spurge)

Common pest name

Banded-winged whitefly

Scientific pest name

Trialeurodes abutiloneus

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 whitefly native to the Americas with the potential to introduce harmful viruses to the UK. EU regulation should be considered and further assessed by EPPO.

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/