In 2000, it continued to kill wind break, yard and plantation trees. This disease is the most common forest pest that landowners request assistance. Thus from this 10 year history, the disease has the status of the number one disease in Indiana, as it is killing more trees than any other forest pest. Trees from 4 to 30 feet tall and 3 to 6 inches in diameter are commonly killed. Trees can turn brown in color at any time of the year, but do so more commonly in the spring and fall.
Infected trees appear light green and sparse or thin at first.
Then the trees turn brown in a short period of time. Most landowners do not recognize the early symptoms of the disease. They usually see the dead brown tree and sawdust from woodborers that attack the dead tree. Declining sapling caused by Leptographium procerum. The distribution of Pine Shoot Beetle , Tomicus pineperda, continues to move through the state with 8 new counties added to the quarantine area.