Primula japonica 'Postford White' (Japanese primrose 'Postford White' )

Botanical name

Primula japonica 'Postford White'

Other names

Japanese primrose 'Postford White' , Primula 'Candelabra White'

Genus

Primula Primula

Variety or Cultivar

'Postford White' _ 'Postford White' is a robust, rosette-forming, deciduous perennial with broad, oblong or spoon-shaped, scalloped, pale green leaves and, in late spring and early summer, stout stems bearing whorls of white flowers with red centres.

Foliage

Deciduous

Fragrance

Flowers are fragrant.

Habit

Clump-forming, Erect flower stem, Rosette

Awards

RHS AGM (Award of Garden Merit)

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Colour

Flower

White in Spring; White in Summer

Foliage

Dark-green in Spring

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How to care

Watch out for

Specific pests

Aphids , Glasshouse red spider mite , Leaf and bud eelworms , Leaf-mining sawflies , Slugs , Vine weevil

Specific diseases

Primula leaf spot

General care

Pruning

Cut back after flowering.

Propagation methods

Division

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Monthly care advice

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Where to grow

Primula japonica 'Postford White' (Japanese primrose 'Postford White' ) will reach a height of 0.7m and a spread of 0.5m after 2-5 years.

Suggested uses

Beds and borders, Cottage/Informal, Rock

Cultivation

Grow in deep, moist, humus-rich soil in partial shade or full sun.

Soil type

Loamy

Soil drainage

Moisture-retentive

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

Defra's Risk register #1

Plant name

Primula japonica 'Postford White' (Japanese primrose 'Postford White' )

Common pest name

Scientific pest name

Plantago asiatica mosaic virus

Type

Virus or Viroid

Current status in UK

Unknown

Likelihood to spread to UK (1 is very low - 5 is very high)

5

Impact (1 is very low - 5 is very high)

3

General biosecurity comments

Pest risk analysis suggested potential economic impacts would be small; and management by industry would be appropriate. Industry may wish to monitor for the presence of the pest and the Dutch industry certification scheme is of added benefit to the UK.

Defra's Risk register #2

Plant name

Primula japonica 'Postford White' (Japanese primrose 'Postford White' )

Common pest name

Necrotic spot

Scientific pest name

Impatiens necrotic spot virus

Type

Virus or Viroid

Current status in UK

Present (Widespread)

Likelihood to spread in UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

3

General biosecurity comments

Pest of mainly ornamentals and vegetables; present in the UK; and covered by the EU listing of Tomato Spotted Wilt Virus. To be kept under consideration in light of a review of the EU listing.

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/