Archive for August 2021

Oak Leaf Blister is caused by a fungus known as Taphrina caerulescens. Typically, red and black oaks are the two species most affected by oak leaf blister, but we’ve seen lots of white oaks with this issue along the front range. When we have a cool, wet spring, it is the perfect storm for the spores to…

What are Scale Insects? Scale is an insect with piercing-sucking mouthparts, which attaches to twigs or branches of the tree and settles in to feed on the sap of the plant. Most scales are host specific, meaning that they usually only attack one type of tree or plant. However, there are so many scale species,…