Least Willow
Salix rotundifolia
Last reviewed: June 2026
Light
full sun
Water
high
Size
36"–120" H × 36"–120" W
Bloom
Apr, May, Jun
Native to
ID, MT, WY
Pollinators
bees, beetles
Round-leaf willow is a shrub that forms a dense, rounded shape with distinctive circular leaves. It produces catkins in spring and requires consistent moisture to thrive. This willow works well as a natural screen or in rain gardens where its high water needs can be met.
In an HOA neighborhood
Least Willow 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.
- Large mature size may appear overgrown
- High water requirements seem excessive for xeriscaping
- Bare winter appearance lacks structure
Wildlife value
The spring catkins provide early-season nectar for bees and beetles when few other plants are blooming. Birds often use the dense branching for nesting sites.
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.
Does Least Willow fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.