North America Non-native Plant

Cottet Willow

Botanical name: Salix ×cottetii

USDA symbol: SACO28

Native status: Not native but doesn't reproduce and persist in the wild

Cottet Willow: A Mysterious Hybrid Worth Understanding If you’ve stumbled across the name Cottet willow or its botanical designation Salix ×cottetii in your plant research, you might be scratching your head wondering what exactly this plant is. You’re not alone! This particular willow hybrid is something of an enigma in ...

Cottet Willow: A Mysterious Hybrid Worth Understanding

If you’ve stumbled across the name Cottet willow or its botanical designation Salix ×cottetii in your plant research, you might be scratching your head wondering what exactly this plant is. You’re not alone! This particular willow hybrid is something of an enigma in the gardening world, and there’s a good reason why information about it can be surprisingly hard to find.

What Is Cottet Willow?

Salix ×cottetii, commonly known as Cottet willow (and sometimes referred to as dwarf willow), is a hybrid willow species. The × in its botanical name is your clue that this isn’t a naturally occurring species, but rather a cross between two different willow species. Think of it as nature’s own mixing and matching experiment!

However, here’s where things get a bit tricky: detailed information about this specific hybrid is remarkably scarce in horticultural literature. This could mean several things – it might be a rare hybrid, regionally specific, or perhaps not widely cultivated in the gardening world.

The Information Gap Challenge

Unlike many popular garden plants that have been thoroughly studied and documented, Cottet willow falls into that mysterious category of plants that exist in botanical records but lack the detailed growing guides we gardeners love to rely on. We don’t have clear information about:

  • Its native range or geographic distribution
  • Specific growing conditions and care requirements
  • USDA hardiness zones
  • Mature size and growth habits
  • Invasive or conservation status

Should You Plant Cottet Willow?

Given the lack of readily available information about this hybrid, we’d recommend proceeding with caution. When a plant’s characteristics, growing requirements, and potential impacts aren’t well-documented, it’s generally wise to consider better-known alternatives.

If you’re drawn to willows for your landscape, consider these well-documented native alternatives instead:

  • Pussy willow (Salix discolor) – beloved for its fuzzy catkins
  • Black willow (Salix nigra) – excellent for wet areas
  • Sandbar willow (Salix interior) – great for erosion control
  • Peachleaf willow (Salix amygdaloides) – attractive foliage and form

The Willow Family’s Garden Benefits

While we can’t speak specifically to Cottet willow’s benefits, willows in general are fantastic additions to the right garden setting. They typically offer:

  • Early season pollen for bees and other pollinators
  • Nesting sites and food for various bird species
  • Rapid growth for quick landscape impact
  • Tolerance for wet or challenging soil conditions

A Word of Advice

If you’ve encountered Cottet willow at a nursery or in plant catalogs, don’t hesitate to ask detailed questions about its origin, growing requirements, and mature characteristics. A reputable supplier should be able to provide this information. If they can’t, it might be a sign to look elsewhere.

Sometimes the most responsible thing we can do as gardeners is to choose plants that are well-understood and documented, especially when we’re trying to create sustainable, beneficial landscapes for both ourselves and local wildlife.

Moving Forward

The plant world is full of mysteries, and Salix ×cottetii appears to be one of them! While this might be frustrating if you had your heart set on this particular willow, it’s also an opportunity to explore the many wonderful, well-documented willow species that can bring beauty and ecological benefits to your garden with much more predictable results.

How

Cottet Willow

Grows

Growing season

Spring and Summer

Lifespan

Moderate

Growth form & shape

Multiple Stem and Semi-Erect

Growth rate

Rapid

Height at 20 years

5

Maximum height

5.0

Foliage color

Green

Summer foliage density

Porous

Winter foliage density

Moderate

Foliage retention

No

Flowering

No

Flower color

Yellow

Fruit/seeds

No

Fruit/seed color
Allelopath

No

Nitrogen fixing

None

Toxic

None

C:N Ratio

High

Fire Resistant

No

Foliage Texture

Coarse

Low-growing Grass

No

Resproutability

Yes

Coppice Ability

No

Bloat

None

Cottet Willow

Growing Conditions

Adapted to Coarse Soil

Yes

Adapted to Medium Soil

Yes

Adapted to Fine Soil

Yes

Anaerobic tolerance

High

CaCO₃ tolerance

Low

Cold Stratification

No

Drought tolerance

Low

Nutrient requirement

Medium

Fire tolerance

High

Frost-free days minimum

120

Hedge tolerance

Low

Moisture requirement

High

pH range

5.5 to 7.5

Plants per acre

1740 to 10000

Precipitation range (in)

35 to 65

Min root depth (in)

20

Salt tolerance

None

Shade tolerance

Intermediate

Min temperature (F)

-23

Cultivating

Cottet Willow

Flowering season
Commercial availability

Routinely Available

Fruit/seed abundance
Fruit/seed season
Fruit/seed persistence

No

Propagated by bare root

Yes

Propagated by bulb

No

Propagated by container

Yes

Propagated by corm

No

Propagated by cuttings

Yes

Propagated by seed

No

Propagated by sod

No

Propagated by sprigs

No

Propagated by tubers

No

Seed per pound
Seed spread rate

None

Seedling vigor
Small grain

No

Vegetative spread rate

Slow

Cottet 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 ×cottetii Kern. - Cottet willow

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