Tree & Shrub Insects: Galls.
Gall causes swelling or raised bumps on portions of the leaf, twig, trunk, root or branch and may be caused by fungus, insects, mites or mechanical injury. Galls which are due to insect activity are caused by one of two reasons: The insect feeding on the plant or the insect laying eggs on the plant and how the plant reacts to these incidents.
Although the damage is unsightly, galls do not usually damage the tree in the long run (though heavy infestations can defoliate and deform a tree). Once the gall has formed homeowners may prune the gall areas out. If galls are a common problem year after year, an insecticide may be warranted as a preventative measure (the application must be made through spring into early summer).
Trees and shrubs Attacked:
May occur on nearly every species of tree or shrub in the Northwest Ohio or Southeast Michigan region.
Damage to look for :
- Swelling and abnormal growth on the tree.
- Usually, galls are colorful and standout.
What homeowners can do:
- Prune the gall off and destroy it when spotted, this will also help keep insect populations down since many galls are formed by insects laying eggs or insects residing within the gall and feeding.
- Preventative insecticides may be applied if warranted.
If you believe your trees or shrubs have insect activity, call Grounds Services today for a no-obligations visit at 567-952-0057.
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