Spruce Diseases in Illinois
What is going on with Spruce trees?? Colorado Spruce trees are not native to Illinois, and are really having a tough time lately with the changing environment we’ve had over the last decade! Other varieties of Spruce trees are having a hard time as well. We just received an update from the University of Illinois Extension service that there are several issues going on at this time with Spruce trees in the area. Below is a list of diseases that they are seeing at this time of year, and the accompanying symptoms that go along with them. Abiotic Damage Abiotic Damage is basically just environmental factors, such as too much […]
What is Crabapple Scab?
APPLE SCAB Venturia inaequalis Apple Scab is a common landscape tree disease due to the popularity of the Crabapple tree. Although Apple Scab will not directly kill a Crabapple tree it can weaken the tree thereby making it susceptible to other, more harmful, disease or insect pests. The early leaf loss associated with Apple Scab will also reduce the aesthetic beauty of the Crabapple tree and, in some Crabapple varieties, will reduce the amount of flowering the following spring. TREES INFECTED BY APPLE SCAB There are several hundred varieties of Crabapple that have been hybridized over the years. Some varieties of Crabapple are highly resistant to Apple Scab, while certain […]
