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The Plant Guide

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Blue flax

Linum lewisii

LY-num loo-ISS-ee-eye

Blue flax is a short-lived perennial with blue-green needlelike leaves on graceful 2-foot-tall stems. Satiny sky blue flowers, borne on wiry stems, appear in late spring, last through mid-summer, and open fully only on sunny days. Small rounded seedheads form in summer. 

Noteworthy CharacteristicsDiscovered and documented by Meriwether Lewis, in whose honor it was named.

CareGrow in lean, well-drained soil and full sun. Cut back to sedum-like basal growth in formal plantings or leave spent flower stems behind to blend in with a naturalistic setting.

PropagationSow seed in spring or autumn.

ProblemsStem rot, rust, wilt, anthracnose, damping off, slugs, snails, and aphids.

  • Genus : Linum
  • Plant Height : 1 to 3 feet
  • Zones : 3, 4, 5, 6, 7, 8, 9
  • Tolerance : Deer Tolerant
  • Light : Full Sun
  • Moisture : Medium Moisture
  • Plant Type : Perennials
  • Characteristics : Self Seeds, Showy Seed Heads
  • Plant Seasonal Interest : Spring Interest
  • Bloom Time : Summer
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