Physocarpus opulifolius 'Diabolo' (Ninebark 'Diabolo')

Botanical name

Physocarpus opulifolius 'Diabolo'

Other names

Ninebark 'Diabolo', Physocarpus opulifolius 'Monlo', Spiraea opulifolius 'Diabolo', Physocarpus opulifolius 'Diablo'

Genus

Physocarpus Physocarpus

Variety or Cultivar

'Diabolo' _ 'Diabolo' is a compact, suckering, thicket-forming, deciduous shrub with arching branches bearing broadly ovate, lobed, toothed, maroon leaves and dense corymbs of small, cup-shaped, creamy-white flowers in summer. Flowers are followed by bladder-like, green-flushed, red fruit.

Native to

Garden origin

Foliage

Deciduous

Fragrance

Flowers are scented.

Habit

Arching, Suckering, Upright

Awards

RHS AGM (Award of Garden Merit)

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Colour

Flower

White, Cream in Summer

Foliage

Maroon in Spring; Maroon in Summer; Maroon in Autumn

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How to care

Watch out for

Pests

Generally pest-free.

Diseases

Generally disease-free.

General care

Pruning

Pruning group 2.

Propagation methods

Softwood cuttings, Suckers

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Monthly care advice

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Where to grow

Physocarpus opulifolius 'Diabolo' (Ninebark 'Diabolo') will reach a height of 2.5m and a spread of 2.5m after 5-10 years.

Suggested uses

Cottage/Informal, Beds and borders, Low Maintenance, Foliage only

Cultivation

Best in moderately fertile, humus-rich, acid soil in full sun. Will tolerate alkaline soils, but chlorosis may occur if grown in shallow chalky soil. Leaves will turn green in high heat or partial shade.

Soil type

Clay, Loamy, Sandy

Soil drainage

Well-drained, 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 9, Zone 8, Zone 7

Defra's Risk register #1

Plant name

Physocarpus opulifolius 'Diabolo' (Ninebark 'Diabolo')

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

Physocarpus opulifolius 'Diabolo' (Ninebark 'Diabolo')

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

Physocarpus opulifolius 'Diabolo' (Ninebark 'Diabolo')

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