Salix udensis aka Sachalin Willow

Salix udensis is a willow known as Sakhalin willow. It belongs to Salicaceae, the willow family. It grows wild from southern and eastern Siberia to northern Korea. Its native range also takes in Japan. Kew lists it as a tree from temperate regions. The RHS accepts the name Salix udensis. It lists Salix sachalinensis as another name for this species. The tree is not native to Britain or Ireland.

Chicago Botanic Garden lists this willow as a tree. Its record shows a crown with a round shape. It suggests growing the tree as a specimen plant. This means using the tree as the main point of interest. The supplied records give no full-grown height or spread for this species. They thus give no sound size range for garden plans. They also give no bark, stem, or leaf details for the species. These gaps matter when you compare it with named garden forms.

Chicago lists white blooms in March and April. The tree thus blooms in early spring at that garden. Those dates do not apply to all places where it grows. The supplied species entry does not say how the flowers form. It gives no details about fruit or seed, either. The RHS page describes flowers and leaves for willows as a group. These group traits do not show this species' exact traits.

For garden care, Chicago lists a site in full sun. It gives moderate water needs and USDA zones 4–7. These are the clearest growing facts for this species in the supplied records. The records give no soil texture or pH range for the species. They also give no UK hardiness rating. They do not state how fast it grows or when to prune. These gaps do not mean the tree needs little care.

The detailed UConn account covers the named cultivar ‘Sekka’. Its notes on odd stems, size, and pests apply to that cultivar. They cannot serve as sound facts about the species. The same holds for its claims about growth and lifespan. The supplied species records name no pests or diseases. They give no proof of edible parts or use as medicine. No safety statement for this species shows that people or pets can eat it without harm.