Pine shoot beetles and pine spittlebugs
Editor’s note: This article is from the archives of the MSU Crop Advisory Team Alerts. Check the label of any pesticide referenced to ensure your use is included.
Pine soot beetles
If you are in the Pine Shoot Beetle Compliance Program and need to apply a cover spray for pine shoot beetle, get ready, especially if you are in southern Michigan. The best time to spray will be right around 450-500 growing degree days base 50. At this point, the beetles are more or less starting to tunnel into shoots. Chlorpyrifos (Lorsban 4 E, Whirlwind, Warhawk), cyfluthrin (Baythroid), are labeled.
These are feeding on Scotch and other pines. This species of spittlebug really causes little damage to the tree. Don't worry about trying to control them unless you have huge numbers.