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Harkness' Flaxflower

Leptosiphon harknessii

Last reviewed: June 2026

Harkness' Flaxflower (Leptosiphon harknessii)
Photo: Genevieve K. Walden / Wikimedia Commons (CC BY-SA 3.0)

Light

full sun

Water

low

Size

2"–12" H × 2"–8" W

Bloom

Apr, May, Jun

Native to

CA, ID, NV, OR and 2 more states

Pollinators

bees, butterflies

Browse plants for this ecoregion

Harkness's flax is a delicate annual wildflower that produces small, colorful blooms from April through June. This compact plant stays low to the ground with a tidy growth habit and requires minimal water once established.

In an HOA neighborhood

Harkness' Flaxflower takes more care to keep looking intentional in a front yard. Maintenance level: moderate. Consider it for backyard or mid-zone beds rather than the street edge.

Works well in: backyard only.

  • Dies back completely after blooming
  • May appear sparse or patchy
  • Annual nature creates inconsistent coverage

Wildlife value

The flowers attract native bees and butterflies during the spring blooming period. As an annual, it provides seasonal nectar sources for pollinators.

Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

Does Harkness' Flaxflower fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.