Many trees in Colorado get attacked by insects every year. These damaging tree insects might include aphids, curl aphid, mealy bug, leafminers, bronze birch borer, elm leaf beetle, elm scale, honeylocust plant bug, juniper scale, kermes scale, cottony maple scale, spider mites, oystershell scale, ash sawfly, emerald ash borer and many other insects. Even though these insects rarely kill a tree they can cause severe stress and can reduce the trees ability to fight other biotic or environmental conditions like heat and drought stress.
A tree that suffers from insect pressure will grow much slower than a healthy tree and insect pressure on trees can reduce the growth rate by as much as 70%. It is rare, but trees that are left untreated over several years can even be killed by insect pressure.
Organo-Lawn is your local tree care expert for tree pest control. Call with questions about tree care in Boulder area (303)499-2000 or Fort Collins area (970)-225-9425.
Aphids are severely damaging this tree in Boulder, Colorado. Aphids can quickly damage a tree because they can reproduce at the rate of 20 babies per day, per aphid.
This leaf on a tree in Fort Collins is covered in honeydew which is the shiny and sticky secretion left behind by aphids.