North America Native Plant

Scouler’s Willow

Botanical name: Salix scouleriana

USDA symbol: SASC

Life cycle: perennial

Habit: shrub

Native status: Native to Alaska âš˜ Native to Canada âš˜ Native to the lower 48 states  

Synonyms: Salix brachystachys Benth. (SABR16)  âš˜  Salix brachystachys Benth. var. scouleriana (Barratt ex Hook.) Andersson (SABRS2)  âš˜  Salix capreoides Andersson (SACA39)  âš˜  Salix flavescens Nutt. (SAFL13)  âš˜  Salix flavescens Nutt. var. capreoides (Andersson) Bebb (SAFLC2)  âš˜  Salix flavescens Nutt. var. scouleriana (Barratt ex Hook.) Bebb (SAFLS4)  âš˜  Salix nuttallii Sarg. (SANU8)  âš˜  Salix nuttallii Sarg. var. capreoides (Andersson) Sarg. (SANUC)  âš˜  Salix scouleriana Barratt ex Hook. var. brachystachys (Benth.) M.E. Jones (SASCB)  âš˜  Salix scouleriana Barratt ex Hook. var. coetanea C.R. Ball (SASCC)  âš˜  Salix scouleriana Barratt ex Hook. var. crassijulis (Andersson) C.K. Schneid. (SASCC2)  âš˜  Salix scouleriana Barratt ex Hook. var. flavescens (Nutt.) J.K. Henry (SASCF)  âš˜  Salix scouleriana Barratt ex Hook. var. poikila C.K. Schneid. (SASCP)  âš˜  Salix scouleriana Barratt ex Hook. var. thompsonii C.R. Ball (SASCT)  âš˜  Salix stagnalis Nutt. (SAST9)   

Scouler’s Willow: A Hardy Native Beauty for Your Garden If you’re looking for a tough, attractive native plant that can handle whatever Mother Nature throws at it, let me introduce you to Scouler’s willow (Salix scouleriana). This unsung hero of the plant world might just become your new favorite addition ...

Scouler’s Willow: A Hardy Native Beauty for Your Garden

If you’re looking for a tough, attractive native plant that can handle whatever Mother Nature throws at it, let me introduce you to Scouler’s willow (Salix scouleriana). This unsung hero of the plant world might just become your new favorite addition to the garden.

What Makes Scouler’s Willow Special?

Scouler’s willow is a perennial shrub that typically grows as a multi-stemmed woody plant, usually staying under 13-16 feet tall, though it can occasionally reach up to 50 feet under ideal conditions. Don’t let its modest size fool you – this plant packs a serious punch when it comes to garden value.

What really sets this willow apart is its incredible adaptability and early spring show. Before most plants have even thought about waking up from winter, Scouler’s willow bursts forth with cheerful yellow catkins that provide crucial early nectar for hungry pollinators emerging from their winter hideaways.

Native Status and Where It Grows

This fantastic shrub is truly a North American native, calling Alaska, Canada, and much of the western United States home. You’ll find it thriving across an impressive range of states including Alberta, British Columbia, Alaska, Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, South Dakota, Utah, Washington, and Wyoming.

Being native means Scouler’s willow has co-evolved with local wildlife and growing conditions for thousands of years – making it a naturally smart choice for sustainable gardening.

Why Your Garden (and Local Wildlife) Will Love It

Here’s where Scouler’s willow really shines as a garden superstar:

  • Early pollinator support: Those bright yellow catkins appear in early spring when bees and other pollinators desperately need food sources
  • Rapid growth: Need quick results? This fast-growing shrub will establish quickly in your landscape
  • Seasonal interest: Spring catkins, summer foliage, and conspicuous fall color keep things interesting year-round
  • Erosion control: The root system helps stabilize soil, making it perfect for slopes or areas prone to erosion
  • Wildlife habitat: Provides shelter and nesting sites for various bird species

Perfect Garden Situations

Scouler’s willow is incredibly versatile and works beautifully in:

  • Native plant gardens
  • Rain gardens and bioswales
  • Naturalized landscapes
  • Wildlife habitat gardens
  • Restoration projects
  • Areas needing erosion control

Its wetland status varies by region – it can handle both wetland and upland conditions, making it adaptable to various moisture levels in your landscape.

Growing Conditions and Care

One of the best things about Scouler’s willow is how easygoing it is about growing conditions. Here’s what it prefers:

  • Sunlight: Full sun to partial shade (intermediate shade tolerance)
  • Soil: Adaptable to coarse, medium, or fine-textured soils
  • pH: Slightly acidic to slightly alkaline (6.5-8.0)
  • Water: High moisture use, but medium drought tolerance once established
  • Hardiness: Extremely cold hardy (USDA zones 2-7), tolerating temperatures down to -13°F

This willow has medium anaerobic tolerance and high fire tolerance, making it suitable for areas with challenging conditions.

Planting and Care Tips

Getting Scouler’s willow established in your garden is refreshingly straightforward:

  • Planting: Can be grown from bare root plants, containers, cuttings, or seeds
  • Spacing: Plant 3,000-7,000 per acre for restoration projects, or space appropriately for garden use
  • Establishment: Water regularly the first year, then it becomes quite self-sufficient
  • Maintenance: Minimal care needed once established. Has excellent coppice and resprout ability
  • Pruning: Prune after flowering if desired to maintain shape

Seeds require cold stratification, and while seedling vigor is low, the plant makes up for it with rapid growth once established.

A Few Things to Consider

Like any plant, Scouler’s willow has a few quirks to keep in mind:

  • It’s not fire-resistant, so consider placement carefully in fire-prone areas
  • Has high moisture use, so may not be ideal for water-conservation gardens
  • Can grow quite large (up to 30 feet in 20 years), so give it adequate space
  • Needs at least 180 frost-free days

The Bottom Line

Scouler’s willow is one of those dependable, hardworking plants that deserves a spot in more gardens. It’s native, supports wildlife, provides early spring interest, and adapts to a wide range of conditions. Whether you’re creating a wildlife habitat, need erosion control, or simply want to support local pollinators with an early nectar source, this versatile willow has you covered.

Plus, there’s something deeply satisfying about growing a plant that’s been thriving in North American landscapes for millennia. When you plant Scouler’s willow, you’re not just adding a beautiful shrub to your garden – you’re participating in the continuation of a living piece of natural history.

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

Alaska

FAC

Facultative - Plants with this status can occur in wetlands and non-wetlands

Arid West

FAC

Facultative - Plants with this status can occur in wetlands and non-wetlands

Great Plains

FACU

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

Western Mountains, Valleys, and Coast

FAC

Facultative - Plants with this status can occur in wetlands and non-wetlands

Scouler’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 scouleriana Barratt ex Hook. - Scouler'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