If you have an aspen tree struggling ... weed whackers or animals. Cytospora creates a telltale pinkish or orange lesion on the bark of the trunk or the branches. This canker is particularly ...

Fall in Colorado ushers in a show that locals await breathlessly, when quaking aspens ... irrigation. • Cytospora. Stressed aspen often fall prey to cytospora, a canker-causing fungus that ...

the actual canker is not easy to see unless you scrape bark away from the wound. The sapwood of diseased branches often is a blue to brownish color. Cytospora canker spores will persist on a tree ...

If you have an aspen tree struggling ... weedwackers or animals. Cytospora creates a telltale pinkish or orange lesion on the bark of the trunk or the branches. This canker is particularly ...