How much sun does Harkness' Flaxflower need?

Harkness' Flaxflower grows best in full sun conditions.

When does Harkness' Flaxflower bloom?

Harkness' Flaxflower blooms in April, May, and June.

Where is Harkness' Flaxflower native?

Harkness' Flaxflower (Leptosiphon harknessii) is native to CA, ID, NV, OR and 2 more states, per the USDA PLANTS Database and regional native plant society lists.

What pollinators does Harkness' Flaxflower attract?

Harkness' Flaxflower draws bees and butterflies.

Is Harkness' Flaxflower HOA-friendly?

Harkness' Flaxflower takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Harkness' Flaxflower

Name: Pollinator Patch
Author: Pollinator Patch

Leptosiphon harknessii

Last reviewed: June 2026

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

Sierra Nevada Central Basin and Range

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.

Common questions

How much sun does Harkness' Flaxflower need?: Harkness' Flaxflower grows best in full sun conditions.
When does Harkness' Flaxflower bloom?: Harkness' Flaxflower blooms in April, May, and June.
Where is Harkness' Flaxflower native?: Harkness' Flaxflower (Leptosiphon harknessii) is native to CA, ID, NV, OR and 2 more states, per the USDA PLANTS Database and regional native plant society lists.
What pollinators does Harkness' Flaxflower attract?: Harkness' Flaxflower draws bees and butterflies.
Is Harkness' Flaxflower HOA-friendly?: Harkness' Flaxflower takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

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.

Ready to grow Harkness' Flaxflower? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

Add this plant to your garden

iPhone app Android app

Not sure where to start? Take the 2-minute yard quiz