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Narrowleaf Willow

Salix exigua

Last reviewed: June 2026

Narrowleaf Willow is a native deciduous shrub found across western and central North America that blooms April through June. This water-loving willow thrives in riparian areas and provides important habitat for pollinators.

Narrowleaf Willow (Salix exigua)
Photo: iNaturalist user: joergmlpts / Wikimedia Commons (CC BY 4.0)

The USDA PLANTS Database (opens in new tab) does not flag Narrowleaf Willow as toxic to livestock.

Light

full sun

Water

high

Size

36"–240" H × 36"–120" W

Bloom

Apr, May, Jun

Native to

AZ, CA, CO, ID and 13 more states

Pollinators

bees, flies

Browse plants for this ecoregion

Coast RangeSierra NevadaCentral California ValleyCentral California Foothills and Coastal MountainsSouthern California MountainsCentral Basin and RangeMojave Basin and RangeChihuahuan DesertsCentral Oklahoma/Texas PlainsTexas Blackland PrairiesWestern Gulf Coastal PlainSouth Central PlainsSonoran Basin and Range

Narrowleaf willow is a fast-growing native shrub that forms dense thickets along streams and wetlands. It produces small catkins in spring and has narrow, silvery-green leaves that flutter in the breeze. This moisture-loving plant can reach substantial size and spreads readily through underground roots.

Growing Narrowleaf Willow

Grow Narrowleaf Willow in full sun and high water. Mature plants reach 36 to 240 inches tall and spread 36 to 120 inches wide. Expect high maintenance to keep it looking intentional in a front yard.

In an HOA neighborhood

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

Works well in: backyard only.

  • Spreads aggressively through suckers
  • Can look unkempt without regular pruning
  • Requires consistent moisture which may cause overwatering issues

Wildlife value

The spring catkins provide early nectar for bees and flies when few other flowers are available. Dense growth provides nesting habitat for birds and cover for small wildlife.

Common questions

Where does Narrowleaf Willow naturally grow?
Salix exigua is native to 17 states across western and central North America, including Arizona, California, Colorado, Idaho, Kansas, Kentucky, Montana, Nebraska, New Mexico, Nevada, Oklahoma, Oregon, Tennessee, Texas, Utah, Washington, and Wyoming.
When does Narrowleaf Willow bloom?
Narrowleaf Willow produces flowers from April through June, with timing varying by location and elevation.
What pollinators visit Narrowleaf Willow?
The flowers of Salix exigua attract various bees and flies, making it valuable for supporting pollinator populations in riparian ecosystems.
What growing conditions does Narrowleaf Willow prefer?
This willow thrives in full sun to partial sun with consistently high moisture. It naturally occurs along streams, rivers, and other wetland areas where water is abundant.
Is Narrowleaf Willow toxic to livestock?
The USDA PLANTS Database does not flag Narrowleaf Willow as toxic to livestock.
Is Narrowleaf Willow HOA-friendly?
Narrowleaf Willow 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 Narrowleaf Willow? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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