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Linum perenne (Blue flax)

Other names: Perennial flax, Lint bells, Prairie flax

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Species
L. perenne is a variable, clump-forming, herbaceous perennial with slender stems bearing lance-shaped to linear, blue-green leaves and panicles of wide, funnel-shaped, blue flowers in summer.
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Season of interest

Flower

Spring Summer Autumn Winter
Flower

Foliage

Spring Summer Autumn Winter
Foliage
Height and spread

Height and spread

Size Max height Max spread To maturity
0.3 m 0.2 m 2-5 years
0 ft 0 ft 2-5 years

Where to grow

Soil type
  • Chalky
  • Loamy
  • Sandy
Soil drainage
  • Well-drained
Soil pH
  • Acid
  • Alkaline
  • Neutral
Sunlight
  • Full Sun
Aspect
  • East
  • West
  • South
Exposure
  • Sheltered

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Additional plant details

Cultivation

Plant in humus-rich, well-drained soil in a sunny, sheltered position.

Suggested uses

Gravel, Containers/Patio, Rock, Beds and borders, Cottage/Informal, City, Low Maintenance, Meadow

UK hardiness

H4

USDA zones

Zone 7

Sunset zone

4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 2, 3

WUCOLS

North-Central Coastal = Very Low
Central Valley = Very Low
South Coastal = Low
South Inland = Low
High and Intermediate Desert = Unknown
Low Desert = Unknown

Foliage

Deciduous

Habit

Upright, Clump-forming

Native to

Europe

Drought tolerant

No

Flood tolerant

No

Toxicity

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

Plant care

Pruning

Propagation methods

Seed, Stem tip cuttings

Pests

Slugs

Snails

Aphids

Diseases

Plant container grown plants in deep fertile, well-drained soil

Take softwood cuttings

Plant in fertile, humus-rich, well-drained soils

Check for waterlogging during winter (optional)

Plant container grown plants in moderately fertile, well-drained soil

Plant container grown plants in a sunny postion

Sow seeds in a cold frame in autumn

Sow seeds in a cold frame in spring

Prepare a weed-free, perennial meadow seed bed.

Sow perennial meadow seed in an open, sunny position in spring.

Sow perennial meadow seed in an open, sunny position in autumn.

Water spring-planted perennial meadows in dry periods.

Weed spring-sown perennial meadows in the first year.

Spring cut perennial meadows

Summer cut perennial meadows

Autumn cut perennial meadows

Other plants

Plants in this Genus (11)

Linum

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Linum perenne
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Linum perenne Blue flax
Linum grandiflorum 'Charmer'
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Linum grandiflorum 'Charmer' Flax 'Charmer'
Linum grandiflorum 'Blue Dress'
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Linum grandiflorum 'Blue Dress' Flax 'Blue Dress'
Linum perenne 'Sapphires and Diamonds'
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Linum perenne 'Sapphires and Diamonds' Blue flax 'Sapphires and Diamonds'
Linum narbonense 'Heavenly Blue'
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Linum narbonense 'Heavenly Blue' Blue flax 'Heavenly Blue'
Linum 'Gemmell's Hybrid'
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Linum 'Gemmell's Hybrid' Flax 'Gemmell's Hybrid'
Linum grandiflorum 'Rubrum'
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Linum grandiflorum 'Rubrum' Crimson-flowered flax
Linum perenne 'Blau Saphir'
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Linum perenne 'Blau Saphir' Blue flax 'Blau Saphir'
Linum grandiflorum 'Salmon Bright Eyes'
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Linum grandiflorum 'Salmon Bright Eyes' Flowering flax 'Salmon Bright Eyes'
Linum usitatissimum
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Linum usitatissimum Common flax
Linum lewisii
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Linum lewisii Prairie flax
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Companion plants (0)

Related content

Discuss Linum perenne with other Shoot members

Linum perenne

Shoot User
906 0
The flowers offer nectar and pollen to bees. The fruit is a round capsule which splits open to reveal 10 smaller seeds. Two flax flea beetles, Aphthona euphorbiae and Longitarsus parvulus may be found on the foliage.The species now cultivated widely in southern and eastern England for linseed oil is the closely related Linum usitatissimum.
Posted: Thursday 11th of June 2009 07:25 PM Last reply: Saturday 1st of March 2025 12:49 PM
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