Answer: You may be having difficulty finding information because huckleberry is Vaccinium ovatum, a member of the heather family. (This is very apparent when the shrub is flowering. Both heather and huckleberry have bell-shaped flowers.)
Evergreen and red huckleberry plants are native to the Pacific Northwest. According to the book Food for First Peoples by Nancy J. Turner, the berries of the evergreen huckleberry are harvested in late autumn (usually late October and early November). Those not harvested will remain on the shrubs well into the winter. The berries are small, black and shiny (or occasionally dusty blue), and have a sweet, slightly dry taste.
Another reference you can consult is Plants of the Pacific Northwest by Pojar Mackinnon. In this book the berry is described as somewhat musky in taste, and is eaten fresh, preserved in oil, or dried.
Hope the above helps you identify the huckleberry in your garden and how to preserve and enjoy the fruit.
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