Linum perenne (Blue flax)

Short-lived drought tolerant semi-evergreen perennial with deep blue flowers that are replaced daily from April to August. Widely adapted and naturalized throughout much of the U.S. on well-drained, infertile and disturbed soils. Intolerant of poor drainage, flooded soils or high water tables. Good seedling vigor. Use for reclamation, highways and beautification in xeriscaping and around cabins. Also use in green strips and fuel breaks; semi-evergreen and fire resistant. Eaten by livestock and wild ungulates. Birds eat the seeds in fall and winter. Varieties listed below.


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Family: Linaceae

Duration: Perennial

Growth Habit: Forb/herb

Native Status: Introduced

Growth Form: Bunch

Mature Height: 24 in.

Bloom Color: Deep blue

Bloom Period: Indeterminate

Annual Precipitation: 10-20 in.

Drought Tolerance: Medium

Shade Tolerance: Intolerant


Wetland Indicator Status:

Fire Resistance: No

Fire Tolerance: Low

Nitrogen fixation:


Coarse Texture: Yes

Medium Texture: Yes

Fine Texture: No

Salinity Tolerance: Low

CaCO3 Tolerance: High

pH Range: 5.6-8.4


Seeds per Pound: 294,800

Seeding Rate: 5 PLS lbs/acre

Season: Spring/Fall

Days to Germination:


Appar - Outstanding vigor, beauty and overall competitiveness with grasses. Widely used for reclamation, highway roadsides and beautification. Originally released as native Lewis flax (L. lewisii), but later discovered to be an introduced, yet naturalized species. (Released 1980)