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Sorbaria sorbifolia 'Sem' (False spiraea 'Sem' )

Beginner
skill rating
1 hour care
per year
1.5m
Max height
1.5m
Max spread
5-10 years
To maturity

Plant details

Botanical name

Sorbaria sorbifolia 'Sem'

Other names

False spiraea 'Sem' , Spiraea sorbifolia 'Sem' , Ash leaf spiraea 'Sem' , Ural false spiraea 'Sem' , Chinese sorbaria 'Sem' , Zhu mei shu 'Sem'

Genus

Sorbaria Sorbaria

Variety or Cultivar

'Sem' _ 'Sem' is a compact, upright, thicket-forming, deciduous shrub with erect stems bearing pinnate, yellow-green to bright green leaflets, heavily flushed pink, red and bronze in spring and turning red in autumn. Erect, terminal panicles of white flowers bloom in mid- to late summer.


Sorbaria sorbifolia 'Sem' is: Deciduous

Habit

Suckering

Flower

White in Summer

Foliage

Yellow-green, Flushed red, Flushed pink, Flushed bronze, Bright-green in Spring; Yellow-green, Bright-green in Summer; Red in Autumn

How to care

Watch out for

Pests

Generally pest free

Diseases

Generally disease free

General care

Pruning

Pruning group 2 or 6.

Propagation methods

Seed, Semi-hardwood cuttings, Suckers


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Where to grow

Sorbaria sorbifolia 'Sem' (False spiraea 'Sem' ) will reach a height of 1.5m and a spread of 1.5m after 5-10 years.

Suggested uses

Beds and borders, Containers, Cottage/Informal, Hedging/Screens, Low Maintenance, Planted in groups, Waterside

Cultivation

Grow in moist but well-drained soil in full sun or partial shade. May be used as a waterside plant but will form dense thickets if left unpruned. Removing suckers and annual pruning will benefit the shape of the shrub.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Alkaline, 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)

Companion plants

We do not currently have companion plants added for this plant.

Botanical name

Sorbaria sorbifolia 'Sem'

Other names

False spiraea 'Sem' , Spiraea sorbifolia 'Sem' , Ash leaf spiraea 'Sem' , Ural false spiraea 'Sem' , Chinese sorbaria 'Sem' , Zhu mei shu 'Sem'

Genus

Sorbaria Sorbaria

Variety or Cultivar

'Sem' _ 'Sem' is a compact, upright, thicket-forming, deciduous shrub with erect stems bearing pinnate, yellow-green to bright green leaflets, heavily flushed pink, red and bronze in spring and turning red in autumn. Erect, terminal panicles of white flowers bloom in mid- to late summer.

Foliage

Deciduous

Habit

Suckering


Colour

Flower

White in Summer

Foliage

Yellow-green, Flushed red, Flushed pink, Flushed bronze, Bright-green in Spring; Yellow-green, Bright-green in Summer; Red in Autumn


How to care

Watch out for

Pests

Generally pest free

Diseases

Generally disease free

General care

Pruning

Pruning group 2 or 6.

Propagation methods

Seed, Semi-hardwood cuttings, Suckers


Monthly care advice


Where to grow

Sorbaria sorbifolia 'Sem' (False spiraea 'Sem' ) will reach a height of 1.5m and a spread of 1.5m after 5-10 years.

Suggested uses

Beds and borders, Containers, Cottage/Informal, Hedging/Screens, Low Maintenance, Planted in groups, Waterside

Cultivation

Grow in moist but well-drained soil in full sun or partial shade. May be used as a waterside plant but will form dense thickets if left unpruned. Removing suckers and annual pruning will benefit the shape of the shrub.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Alkaline, 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, Zone 4, Zone 3

Defra's Risk register #1

Plant name

Sorbaria sorbifolia 'Sem' (False spiraea 'Sem' )

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

Sorbaria sorbifolia 'Sem' (False spiraea 'Sem' )

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

Sorbaria sorbifolia 'Sem' (False spiraea 'Sem' )

Common pest name

Scientific pest name

Orgyia thyellina

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 moth pest from Eastern Asia which could be damaging to broadleaf and coniferous species if introduced to the UK; as well as having human health impacts. The main pathway is likely to be on goods (including non-plant material) imported from Eastern Asia and awareness raising with the main industry sectors is recommended.

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: 7th March 2019 For more information visit: https://planthealthportal.defra.gov.uk/

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Home garden 2017

Sorbaria Sorbifolia (27/05/2012)

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This plant likes... Garden match
Soil types: Chalky, Loamy, Sandy Tell us...
Soil drainage: Moist but well-drained, Well-drained Tell us...
Soil pH: Alkaline, Neutral Tell us...
Light: Partial Shade, Full Sun Tell us...
Aspect: North, South, East, West Tell us...
Exposure: Exposed, Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

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