Linum narbonense 'Heavenly Blue' (Blue flax 'Heavenly Blue')

Botanical name

Linum narbonense 'Heavenly Blue'

Other names

Blue flax 'Heavenly Blue', Narbonne flax 'Heavenly Blue'

Genus

Linum Linum

Variety or Cultivar

'Heavenly Blue' _ 'Heavenly Blue' is a compact, mound-forming, deciduous perennial with narrowly lance-shaped, dark green leaves and, in summer, slender, wiry stems bearing saucer-shaped, blue flowers with white eyes.

Foliage

Deciduous

Habit

Cushion or Mound Forming, Compact

Toxicity

All parts are poisonous if ingested. Seeds are highly toxic if uncooked. Contact with skin may cause irritation or allergic reaction.

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Colour

Flower

Blue in Summer

Foliage

Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn

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How to care

Watch out for

Specific pests

Aphids , Slugs , Snails

General care

Pruning

Little to no pruning required.

Propagation

Sow in situ in spring. In areas with mild areas, sow in late summer.

Propagation methods

Seed, Stem tip cuttings

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Monthly care advice

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Where to grow

Linum narbonense 'Heavenly Blue' (Blue flax 'Heavenly Blue') will reach a height of 0.45m and a spread of 0.5m after 2-5 years.

Suggested uses

Containers, Gravel, Rock

Cultivation

Plant in humus-rich, well-drained soil in a sunny, sheltered position. Protect from winter wet. Best in a rock or gravel garden. Tends to self-seed.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

South, 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

Defra's Risk register #1

Plant name

Linum narbonense 'Heavenly Blue' (Blue flax 'Heavenly Blue')

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.

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/