Physostegia virginiana 'Crystal Peak White' (Obedient plant 'Crystal Peak White' )

Botanical name

Physostegia virginiana 'Crystal Peak White'

Other names

Obedient plant 'Crystal Peak White'

Genus

Physostegia Physostegia

Variety or Cultivar

'Crystal Peak White' _ 'Crystal Peak White' is a compact, upright, spreading, herbaceous perennial with lance-shaped, toothed, mid- to dark green leaves and dense, spike-like racemes of tubular, white flowers from midsummer into early autumn.

Foliage

Deciduous

Habit

Spreading, Compact, Upright

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Colour

Flower

White in Summer; White 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

May be subject to rot if rhizomes are damaged.

Specific diseases

Root rot

General care

Pruning

Cut to the ground in winter.

Propagation

Tends to self-seed.

Propagation methods

Division, Seed

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Monthly care advice

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Where to grow

Physostegia virginiana 'Crystal Peak White' (Obedient plant 'Crystal Peak White' ) will reach a height of 0.4m and a spread of 0.6m after 2-5 years.

Suggested uses

Beds and borders, Containers, Cottage/Informal, Flower Arranging

Cultivation

Grow in moderately fertile, moist soil in full sun or light shade. May become invasive in rich, moist sites. To control spread, site in drier soil and avoid using fertiliser.

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 9, Zone 8, Zone 7, Zone 6, Zone 5, Zone 4, Zone 3

Defra's Risk register #1

Plant name

Physostegia virginiana 'Crystal Peak White' (Obedient plant 'Crystal Peak White' )

Common pest name

tomato thrips

Scientific pest name

Ceratothripoides brunneus

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

Thrips present in Africa; the Caribbean and parts of Asia; frequently intercepted in the UK. Can cause significant damage to tomatoes and other crops in countries where it is present. Europe wide PRA will consider its potential to establish and cause damage.

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/