Yellow willow is a shrub of the Willow family and the genus Salix, up to 2 meters high. The bark is off-white and does not crack. Branchlets are yellow and shiny. Winter buds are oblong, red and yellow. The leaf blades are linear or linear-lanceolate, light green on the top, lighter on the bottom, and petiole glabrous; the stipules are lanceolate, with glandular teeth on the edge, and often fall early. The flower first leaves open, the inflorescence is oval to short cylindrical, bracts are oblong, apex is obtuse, filaments are free, anthers are yellow, oblong; ovary is long ovoid, capsule is glabrous, light brown yellow, flowering in April , May result.