Sanguisorba tenuifolia 'Purpurea' (Japanese burnet 'Purpurea')

Botanical name

Sanguisorba tenuifolia 'Purpurea'

Other names

Japanese burnet 'Purpurea', Oriental burnet 'Purpurea', Purple burnet

Genus

Sanguisorba Sanguisorba

Variety or Cultivar

'Purpurea' _ 'Purpurea' is a clump-forming, spreading, herbaceous perennial with pinnate, dark green leaves divided into oblong, scalloped leaflets, the entire leaf turning yellow-orange in autumn. Slender, erect, branching stems bear long, dense, nodding, bottlebrush-like spikes of maroon flowers in summer and early autumn.

Foliage

Deciduous

Habit

Clump-forming

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Colour

Flower

Maroon in Summer; Maroon in Autumn

Foliage

Mid-green in Spring; Mid-green in Summer; Mid-green in Autumn

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How to care

Watch out for

Pests

Generally pest free

Diseases

Generally disease free

General care

Pruning

Cut back after flowering or leave seed heads for winter interest.

Propagation

Divide congested plants in spring or autumn.

Propagation methods

Division

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Monthly care advice

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Where to grow

Sanguisorba tenuifolia 'Purpurea' (Japanese burnet 'Purpurea') will reach a height of 1.5m and a spread of 1.2m after 2-5 years.

Suggested uses

Beds and borders, City, Cottage/Informal, Low Maintenance, Prairie planting, Wildlife

Cultivation

Grow in sun or partial shade in moderately fertile soil that is reliably moist. Usually requires support. Site carefully as may become invasive.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moist but well-drained, Moisture-retentive

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

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 8, Zone 7, Zone 6, Zone 5, Zone 4

Defra's Risk register #1

Plant name

Sanguisorba tenuifolia 'Purpurea' (Japanese burnet 'Purpurea')

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

Sanguisorba tenuifolia 'Purpurea' (Japanese burnet 'Purpurea')

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

Sanguisorba tenuifolia 'Purpurea' (Japanese burnet 'Purpurea')

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/