by Matt Russell Last month, Eli Sagor introduced me to the MyMinnesotaWoods team and I’m excited to be aboard! In my new role with the U of M Department of Forest Resources and Extension I’ll be addressing forest ecosystem health issues for forest landowners and natural resource professionals across Minnesota. A recent report by Steve Shifley and colleagues from the US Forest […]
Passing along an announcement from the Minnesota DNR, Division of Forestry: Greetings from MN DNR Forest Health! The March 2009 issue of the Forest Insect & Disease Newsletter, focusing on invasive species, is now available at http://files.dnr.state.mn.us/publications/fid/fid_march09.pdf Highlights include: Firewood Restriction Law Emerald ash borer: FAQ Emerald Ash Borer Preparedness Plan in development Gypsy moth treatments planned Sirex woodwasp update […]
A review of categories of insects affecting tree and forest health: Defoliators, borers, sap-sucking insects, root-feeding insects, cone- and seed-destroying insects, and non-native invaders.
Forest health is affected by insect outbreaks, diseases, invasive species, regeneration, fire ecology, natural disturbance, and many other factors. Not all insects and diseases are bad. Native insects and diseases are a normal part of a healthy forest. An example is the periodic defoliation events from forest tent caterpillars (sometimes called armyworms). Minnesota forests evolved in the presence of these bugs, […]
Some of the most common invasive species in Minnesota’s woods include buckthorn, garlic mustard, Dutch elm disease and the emerald ash borer. Others that might not come to mind could be earthworms or Gypsy moths. All of these species are non-native and are causing significant damage in Minnesota’s forests. You can find identification guides to common invasive species at the DNR invasive species index.
Hardwoods (broadleaf) – General General Information: Disease Management Recommendations for Trees and Shrubs Specific Diseases/Insects: Anthracnose and Other Leaf Spot Diseases of Maples Anthracnose Diseases of Eastern Hardwoods (USFS) Anthracnose of Shade Trees Aphids on Deciduous Trees and Shrubs Aphids on Trees and Shrubs Apple Scab Armillaria Root Disease USFS Carpenter Ants-can affect any standing wood/lumber Damping-off of Seedlings Environmentally […]