Flies can often plague trees. Flies are commonly known for swarming around fruit left in the home for a long time. But in the wild, these flies feed off of fruit that is growing on a tree. For fruit trees, these flies can create very unattractive trees with rotting fruit and larva. Getting rid of the flies usually requires a variety of insecticidal traps and sprays. In some cases, the infecting species is so hard to eradicate that the trees have to be quarantined and destroyed.
These fruit flies can destroy a lot of the olives on the olive tree, according to Olive Oil Source. In many cases, these flies lay eggs in the fruit, which cause them to hatch and cause them to be unappetizing. The larva on the fruit is so small that they cannot be seen until they’ve been growing for awhile. These flies are usually controlled using bait traps that contain ammonium salts. These flies are attracted to the ammonium salts and climb into the solution and drown. Home owners should get rid of the old infected olives because these can be ideal places for the fruit flies to place their larva. Owners can also use sticky traps and insecticidal sprays.
Tree flies can cost a lot of money and time to get rid of. The cherry fruit fly requires sprays every 7 to 10 days. The chemicals sprayed on the trees to get rid of the flies can be harmful to humans and requires that safety goggles and protective clothing that has to be washed after the sprays are applied, according to Trees For You. The sprays cannot be applied in weather that is below 40 degrees and also must not be applied in weather that is above 85 degrees.
Walnut husk flies can cause blemishes on the walnut, which can make the value of these walnuts go down commercially. But these flies do not cause much of a negative effect on the quality of the walnuts, according to the University of California. Infected walnuts should be placed in plastic bags and disposed of. If the infestation is severe enough, insecticidal sprays mixed with the fly’s bait can be used to kill off the flies. Molasses are the common bait used to lure in these flies.
Apple maggots are maggots that grow in apples and eat the inside of the apples. These maggots can spread very quickly, according to Washington State University. When a maggot infestation is spotted, quarantine is necessary. Sticky traps can be set up nearby the apple tree to trap adult apple maggots so that they don’t infest nearby apple trees.