Hydrangea quercifolia 'Snow Queen' (Oak-leaved hydrangea 'Snow Queen')

Botanical name

Hydrangea quercifolia 'Snow Queen'

Other names

Oak-leaved hydrangea 'Snow Queen', Hydrangea quercifolia 'Flemygea'

Genus

Hydrangea Hydrangea

Variety or Cultivar

'Snow Queen' _ 'Snow Queen' is a mound-forming, deciduous shrub with large, deeply lobed, mid-green leaves turning bronze and purple in autumn and, in summer, dense, conical panicles of white flowers turning pink with age.

Foliage

Deciduous

Habit

Bushy, Cushion or Mound Forming

Toxicity

Can cause mild stomach upset if ingested and contact with foliage may aggravate skin allergies.

Awards

RHS AGM (Award of Garden Merit)

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Colour

Flower

White in Summer; Pale-brown, Flushed pink in Autumn

Foliage

Dark-green in Summer; Red, Coral-pink in Autumn

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How to care

Watch out for

Specific pests

Capsid bug , Glasshouse red spider mite , Hydrangea scale

Diseases

Generally Disease Free

Specific diseases

Grey mould , Leaf spot , Powdery mildew , Ring spot , Rust

General care

Pruning

Pruning group 1.

Propagation methods

Seed, Softwood cuttings

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Monthly care advice

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Where to grow

Hydrangea quercifolia 'Snow Queen' (Oak-leaved hydrangea 'Snow Queen') will reach a height of 2m and a spread of 2m after 5-10 years.

Suggested uses

Beds and borders, City, Coastal, Containers, Cottage/Informal, Flower Arranging, Low Maintenance

Cultivation

Best in moist but well-drained soil in partial shade. Will grow in full sun if the soil is consistently moist.

Soil type

Clay, Loamy

Soil drainage

Moist but well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

North, South, East, West

Exposure

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

Hydrangea quercifolia 'Snow Queen' (Oak-leaved hydrangea 'Snow Queen')

Common pest name

assam thrips; castor thrips; chilli thrips; yellow tea thrips

Scientific pest name

Scirtothrips dorsalis

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

EU listed pest for citrus but highly polyphagous and intercepted on a number of hosts. EU legislation should be updated to reflect wider host list.

Defra's Risk register #2

Plant name

Hydrangea quercifolia 'Snow Queen' (Oak-leaved hydrangea 'Snow Queen')

Common pest name

Rice leaf nematode; Strawberry crimp disease nematode; White tip nematode; White tip nematode of rice

Scientific pest name

Aphelenchoides besseyi

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)

3

General biosecurity comments

Damaging nematode affecting rice crops and strawberry production in warmer climates; could potentially present a threat to strawberry production and ornamental production in protected environments. But modern production practices seem to reduce likelihood of impacts. Pest is also regulated at EU level; which reduces likelihood of entry.

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/