Blue Flax

Herbaceous

Blue Flax

Linum lewisii

Also known as: Lewis Flax, Prairie Flax

Herbaceous Linaceae PollinatorOrnamentalWildlife AttractorFiber
Hardiness Zone
5-9
Ideal Temp
55–80°F
Survives Down To
-30°F
Life Cycle
Perennial

Blue flax (Linum lewisii) is a short-lived perennial or sometimes biennial wildflower native to western North America, valued for sky-blue flowers on wiry stems and narrow gray-green leaves. Mature plants reach about 45–90 cm (18–36 inches) tall with an airy, upright habit and often reseed politely in open, sunny spots. 🌞💧 Sun and Water Requirements: - Full sun to very light afternoon shade; shade reduces bloom. - Well-drained, lean to average soil; dislikes wet feet. In subtropical and tropical Americas, treat as a cool-season accent or grow in drier, breezy sites—humid wet-season saturation shortens life. - Moderate water during establishment; thereafter fairly drought-tolerant. ✂️ Methods to Propagate: - Seeds: Sow in fall or early spring; lightly cover seed; germinates in 2–4 weeks with warmth. - Transplants: Move young self-sown seedlings while small; older taproots resent disturbance. 🌾 Harvest / Best Use Timing: - Collect seeds when capsules brown and rattle. Stems historically used for cordage fiber in small homestead batches; flowers are short-lived in the vase but lovely for seasonal bouquets.

Good Neighbors
  • Echinacea
  • Yarrow
  • California Poppy
Known Threats — Organic Solutions Only
Aphids
Aphidoidea
Japanese Beetles
Popillia japonica