Managing Biotic Tree Problems
including Insects, Mites and Diseases
A number of common diseases and insects affect the health of Wisconsin trees. Some probelms are more severe than others, and some may warrant treatment.
More severe insect and disease issues may result in premature leaf drop, dieback, overall decline in tree health, or tree mortality. Some of these biotic (i.e. living) tree health threats may become chronic if left untreated. Less severe insect or disease issues may only cause trees cosmetic issues, or minor foliar symptoms later in the season.
Common Wisconsin Insects & Mites
Bark beetles
Aphids
Leafminer (Birch, Elm, etc.)
Gyspy Moth
Zimmerman Pine Moth
Tent caterpillars and fall webworms
Scale insects (e.g. Magnolia Scale)
Spruce spider mite & Two-spotted spider mite
Tent Caterpiller
Aphid Damage
Damage from Emerald Ash Borer
Common Wisconsin Tree Diseases
Fireblight
Dothistroma
White Pine Blister Rust
Needlecasts (Rhizosphaera, Stigmina, Swiss)
Cedar-Apple and related rusts (Gymnosporangium spp.)
Canker diseases (Cytospora, etc.)
Anthracnose (Sycamore, Maple, Ash, etc.)
Apple Scab
Red Oak Chlorosis
If you notice a change in your tree’s health, please give us a call for further assessment. Our arborist will help diagnose your problem and prescribe a treatment regiment if appropriate.