Red willow (Salix laevigata) is a fast-growing native tree commonly found along creeks and wetlands throughout California, from sea level to 5,000 feet. It thrives in consistently moist areas and is often used for erosion control, restoration projects, and bioswales.
This mostly deciduous tree has flexible reddish twigs, shiny green leaves with pale undersides, and yellow catkins in spring. Female trees produce cottony seeds that are dispersed by wind. Its variable form includes multiple twisting trunks that often sprawl along creek beds before growing upright.
Red willow is an important habitat tree, providing food for butterflies like the Western tiger swallowtail, mourning cloak, Lorquin’s admiral, and hairstreaks. While not typically used in residential gardens, it is an excellent choice for wetland landscapes