According to observations of naturalists and beekeepers.
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Diamondleaf willow grows from the southern Yukon Territory south to California and New Mexico, and east across boreal Canada to eastern Canada and New England. It is restricted to mountainous terrain in the western United States.
This plant is present in at least 29 states/provinces in this country.
Diamondleaf willow is a small-to-medium-sized deciduous shrub. The bark is gray and smooth. The flowers occur in about 1- to 2-inch-long (2.5 cm), erect catkins on the previous year's twigs.
Diamondleaf willow flowers appear in the spring before or sometimes with the leaves.
Cercis orbiculata (aka: California redbud, Western redbud, Arizona redbud, Judas tree, Cercis occidentalis)
Prunus serotina (aka: Black cherry, Wild black cherry, Rum cherry, Mountain black cherry, Wild cherry)
Salix gooddingii (aka: Goodding's willow, Dudley willow, Valley willow, Western black willow)
Celtis laevigata (aka: Hackberry, Sugarberry, Lowland hackberry, Sugar hackberry, Arizona sugarberry, Netleaf hackberry, Small's hackberry, Southern hackberry, Texas sugarberry)
Acer negundo (aka: Boxelder, Western boxelder, Arizona boxelder, California boxelder, Texas boxelder, Interior boxelder, Violet boxelder)
Acer glabrum (aka: Rocky Mountain maple, Douglas maple, Greene's maple, New Mexico maple, Torrey maple)
Prunus americana (aka: American plum, Goose plum, River plum, Wild plum)
Salix lucida (aka: Shining willow, Greenleaf willow, Tail-leaf willow, Whiplash willow, Pacific willow, Lance-leaf willow, Longleaf willow, Red willow, Western shining willow)
