I have 2 beautiful 20 year old white pines in my front pasture in Virginia. The largest tree shows signs of borers with sap dripping from some holes. Is fall too late to treat? Should I treat in early spring of 2010………………please let me know. Thank you.
There are many species of beetles and weevils that can live in a tree. Pine trees seem to be a common target and what you have found is not necessarily the end for your two trees. The good news is that pine trees are resilient and if the infestation is small, many times it can can be managed and defeated. The key is making sure it doesn’t spread quickly or to surrounding trees.
And even though the larvae feeding may be hard to kill, you are still able to treat with the best products available to hopefully save your tree from the current activity and in doing so, stop it from spreading.
So to start, spray CYPERMETHRIN on the bark of all neighboring trees and then spray the infested trees. Plan on using 1/2 to 1 gallon of mixed solution per tree. And mix it at the rate of 2 oz per gallon of water.
Use any standard PUMP SPRAYER to make the application.
After spraying, let the treatment dry for an hour and then treat all holes you can find with CYKICK AEROSOL. The included injecting straw will let you get the material under the bark and in turn, flood the galleries. Treatments should be done every couple of months once detected until you note the activity ceases.
More information on this pest can be found here:
Pine Borers: http://www.bugspray.com/article/pinebark.html
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