Diamond willows may be found in many areas in the United States and Canada. To locate them, you must know the type of areas where willow trees grow and what diamond willows looks like. Diamond willow trees can be identified by indentations in the bark that are roughly in the shape of a diamond with rounded sides and pointed ends.
The Institute for Culture and Ecology says that willows like wet, low-lying areas such as ditches, swamps and riverbanks. Any place that is consistently damp or wet is a good place to look for diamond willows. Lake shores and along farm drainage ditches are also likely places to find them. They grow in clumps in dense areas, often among other types of trees.
According to the Alaska Science Forum at the Geophysical Institute, the Copper River in Alaska is well-known for its diamond willows, but they may also be found in the forests of the Kenai Peninsula northward. Valleys of rivers such as the Yukon, Tanana and the Koyukuk are also excellent places to look. Other states where diamond willows can be found include Minnesota, the Great Plains, Montana, the upper Missouri River valley, the Upper Peninsula of Michigan and New York.
In Canada, diamond willows grow in Alberta, Manitoba, Ontario, Quebec, the northern part of British Columbia, and Saskatoon, Saskatchewan. They also thrive in the vast Boreal Forest. Generally, where you find willow trees, you’ll find willows with diamonds.