Salix x simulatrix (Dwarf willow)

Botanical name

Salix x simulatrix

Other names

Dwarf willow

Genus

Salix Salix

Species

S. x simulatrix - S. x simulatrix is a mat-forming, deciduous shrub with ovate to rounded, hairy, mid- to bright green leaves and upright, yellow flower catkins in early to mid-spring.

Native to

Garden origin

Foliage

Deciduous

Habit

Compact, Mat Forming

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Colour

Flower

Yellow in Spring

Foliage

Grey-green in Spring; Grey-green in Summer; Grey-green in Autumn

General care

Pruning

Pruning group 1. Sometimes sold as a standard.

Propagation methods

Hardwood cuttings, Softwood cuttings

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Monthly care advice

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Where to grow

Salix x simulatrix (Dwarf willow) will reach a height of 0.5m and a spread of 1m after 20-50 years.

Suggested uses

Rock, Low Maintenance, Coastal, Beds and borders, Architectural

Cultivation

Grow in moist but well-drained, neutral to acid soil in full sun or partial shade.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Moisture-retentive, Moist but well-drained

Soil pH

Acid, 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)

USDA zones

Zone 7, Zone 6, Zone 5

Defra's Risk register #1

Plant name

Salix x simulatrix (Dwarf willow)

Common pest name

Scientific pest name

Agrilus fleischeri

Type

Insect

Current status in UK

Absent

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

4

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

5

General biosecurity comments

Pest of poplar; native to East Asia. Likely to be damaging if introduced to the UK. Protecting against the risk of entry via wood packaging material and other means remains a priority. A Europe-wide assessment would be helpful; to consider strengthened regulation.

Defra's Risk register #2

Plant name

Salix x simulatrix (Dwarf willow)

Common pest name

Namangan longhorn beetle

Scientific pest name

Xylotrechus namanganensis

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

Polyphagous pest originating in Asia; some uncertainty regarding risk to UK; further work needed to assess climatic suitability.

Defra's Risk register #3

Plant name

Salix x simulatrix (Dwarf willow)

Common pest name

Japanese swift moth

Scientific pest name

Endoclita excrescens

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

Polyphagous moth pest whose larvae feed off a range of herbaceous and woody hosts. Native to East Asia where substantial impacts have been observed; and current import requirements do not fully mitigate the risk of introduction. A PRA will help to assess the level of risk more fully.

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/