North America Native Plant

Wolf’s Willow

Botanical name: Salix wolfii

USDA symbol: SAWO

Life cycle: perennial

Habit: shrub

Native status: Native to the lower 48 states  

Synonyms: Salix idahoensis (C.R. Ball) Rydb. (SAID2)  âš˜  Salix wolfii Bebb ssp. idahoensis (C.R. Ball) A.E. Murray (SAWOI)  âš˜  Salix wolfii Bebb var. idahoensis C.R. Ball (SAWOI2)   

Wolf’s Willow: A Hardy Mountain Native for Water-Loving Gardens Looking for a tough, water-loving native shrub that can handle mountain weather like a champ? Meet Wolf’s willow (Salix wolfii), a compact willow species that’s perfectly at home in wet spots where other plants might throw in the towel. This scrappy ...

Wolf’s Willow: A Hardy Mountain Native for Water-Loving Gardens

Looking for a tough, water-loving native shrub that can handle mountain weather like a champ? Meet Wolf’s willow (Salix wolfii), a compact willow species that’s perfectly at home in wet spots where other plants might throw in the towel. This scrappy little shrub has been quietly thriving in the American West for centuries, and it’s ready to bring that same resilience to your garden.

What Makes Wolf’s Willow Special?

Wolf’s willow is a perennial shrub that typically stays nice and manageable, usually growing less than 13-16 feet tall. Unlike its tree-sized willow cousins, this multi-stemmed beauty keeps things compact while still delivering all the classic willow charm. Its narrow, silvery-green leaves catch the light beautifully, and in spring, it produces those distinctive fuzzy catkins that willows are famous for.

You might also see this plant listed under its botanical synonyms, including Salix idahoensis, but don’t let the scientific name shuffle confuse you – it’s all the same wonderful plant.

Where Wolf’s Willow Calls Home

This native gem is truly a child of the American West, naturally occurring across eight states: Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, and Wyoming. It’s particularly fond of mountainous regions and high-elevation areas where the air is crisp and the water is plentiful.

The Perfect Spot for Wolf’s Willow

Here’s where Wolf’s willow really shines – it’s practically made for wet gardens! This plant has different wetland statuses depending on your region:

  • Arid West: Obligate wetland (almost always found in wetlands)
  • Great Plains: Facultative wetland (usually in wetlands, sometimes elsewhere)
  • Western Mountains: Obligate wetland (almost always in wetlands)

Translation? If you’ve got a soggy spot in your yard that makes other plants unhappy, Wolf’s willow will be absolutely thrilled to call it home.

Garden Design Ideas

Wolf’s willow is incredibly versatile in the landscape. Here are some great ways to use it:

  • Rain gardens: Perfect for managing runoff while looking beautiful
  • Riparian restoration: Helps stabilize stream banks and wetland edges
  • Wildlife gardens: Creates habitat for various creatures
  • Alpine gardens: Adds authentic mountain character
  • Native plant collections: A must-have for western native enthusiasts

Growing Conditions and Care

Wolf’s willow is remarkably easy-going once you understand its preferences:

Sunlight: Full sun to partial shade – it’s quite adaptable
Soil: Moist to wet conditions are essential; this plant doesn’t do drought
Hardiness: Zones 3-7, so it can handle serious cold
Climate: Prefers cool mountain climates over hot, humid conditions

The key to success with Wolf’s willow is consistent moisture. If you can provide that, you’re golden. It’s incredibly low-maintenance once established and rarely needs pruning beyond the occasional cleanup of dead wood.

Wildlife and Pollinator Benefits

Those early spring catkins aren’t just pretty – they’re like an all-you-can-eat buffet for pollinators emerging from winter. When most plants are still sleeping, Wolf’s willow is already serving up nectar and pollen for hungry bees and other beneficial insects. The shrub also provides nesting sites and cover for various wildlife species throughout the growing season.

Planting Tips for Success

Getting Wolf’s willow established is straightforward:

  • Plant in spring when the soil is workable but still naturally moist
  • Choose the wettest spot in your garden – seriously, this plant loves water
  • Space plants according to your landscape goals (closer for screening, farther for specimen planting)
  • Keep soil consistently moist the first growing season
  • Mulch around the base to retain moisture and suppress weeds

Is Wolf’s Willow Right for Your Garden?

Wolf’s willow is perfect for you if you have wet or frequently moist soil and want to embrace native plants that truly belong in your region. It’s especially ideal for gardeners in the mountain West who want low-maintenance plants that can handle temperature extremes while supporting local wildlife.

However, if you’re dealing with dry conditions or can’t commit to keeping the soil moist, this might not be your plant. Wolf’s willow is pretty specific about its water needs, and trying to grow it in dry conditions will only lead to disappointment for both you and the plant.

For western gardeners looking to create authentic, sustainable landscapes that celebrate their region’s natural heritage, Wolf’s willow is a fantastic choice that delivers beauty, wildlife value, and that satisfying feeling of growing something that truly belongs.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Arid West

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Great Plains

FACW

Facultative Wetland - Plants with this status usually occurs in wetlands but may occur in non-wetlands

Western Mountains, Valleys, and Coast

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Wolf’s Willow

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Salicales

Family

Salicaceae Mirb. - Willow family

Genus

Salix L. - willow

Species

Salix wolfii Bebb - Wolf's willow

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA