trees growing along fence line. shady lower part of trees and shady end of fence line more effected. when cut open swelling doesnt appear to show any sign of insect larve.changes colour from green to brown within 20 to 30 seconds not all the trees are infected just those towards the back. how do we deal with the problem best. thanks for your help.
08 September 2011 12:47 AM
There are meally bug present which can be controlled with PestOil which should be applied now. Alternatively, try Yates Nature's Way Citrus & Ornamental Spray. Next Winter when the tree is dormant an application of Lime Sulfur will help remove any pests such as scale and meally bug which will he hiding in the bark. To help inprove the trees health you could apply some Yates Uplift root booster or Yates Seaweed booster. The trees appear to be quite stressed and this may be due to the shady conditions.