Diseases and Insect Pests of Conifers (Evergreen trees) – by species

Douglas-Fir (Pseudotsuga): Armillaria Root Disease USFS Armillaria Root Rot Christmas Tree Pest Manual (USFS) Disease Management Recommendations for Trees and Shrubs (Swiss Needlecast) Dwarfmistletoe of Douglas-fir Insecticide Suggestions to Manage Landscape Tree and Shrub Insects HOW to Identify and Control Rhabdocline and Swiss Needlecasts of Douglas-Fir (USFS) Fir (Abies): Armillaria Root Disease USFS Armillaria Root Rot Christmas Tree Pest Manual […]

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Diseases and Insect Pests of Hardwoods (Broadleaf trees) – by species

Apple/Crabapple (Malus): Aphids on Deciduous Trees and Shrubs Apple Maggot Management Apple Scab Disease Management Recommendations for Trees and Shrubs (Black Rot Canker, Cedar-Apple Rust, Fireblight, Frog-eye Leaf Spot, Powdery Mildew, and Apple Scab) Fireblight Forest Tent Caterpillars in Minnesota Forest Tent Caterpillar (USFS) Gypsy Moth (USFS) Gypsy Moth in Minnesota (MNDNR) Insecticide Suggestions to Manage Landscape Tree and Shrub […]

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2014 webinars from Extension and SFEC

We’re pleased to announce a new collaboration between Extension and the Sustainable Forestry Education Cooperative to deliver a new webinar every month in 2014. “Webinars” are online presentations that include live questions and answers. Who should participate:  These presentations are designed for natural resource professionals and interested landowners and are approved for continuing education credits through SAF and MN Forest Stewardship. […]

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Tick-borne diseases in Minnesota

June 2013 update:  In April 2013, the UMN Sustainable Forests Education Cooperative hosted a webinar presentation by Tom Grier, microbiologist and Duluth Lyme Support Group coordinator, with updated information on Lyme and other tick-borne diseases in Minnesota.  A description and link to the recording are below. Description: Since 1975, when Lyme disease was first described in the medical literature, it […]

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2013 Forest Health and Resilience Series

Update: This series is now over. We’re excited to announce a new forest health and resilience series. Drought, wildfire, invasive species, and new insect pests have all caused large-scale forest health problems in recent years.  These threats are likely to continue.  We’re planning a new series on practical steps you can take as a landowner or land manager to keep your […]

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Know thy woods: On the value of monitoring

You may have noticed a lot of talk on MyMinnesotaWoods about forest health and phenology. There’s a common theme and a good reason for this: There are a lot of good reasons to monitor your woods through the weeks, months, years, and even decades: 1. Trees and woodland stands are constantly changing. Trees have to grow to live, and big […]

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Extension’s 2012 woodland webinar series

“Webinars” are online presentations that include live questions and answers.  All you need to join is an internet-connected computer with speakers.  We’ve been offering them since 2010, and they’ve been getting more popular every year.  Prior attendees tell us they appreciate the ability to get their questions answered as well as the convenience and low cost.  You can view recordings […]

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Extension’s Fall 2011 woody biomass webinar series

The University of Minnesota Extension will offer 7 web-based seminars, or “webinars” on woody biomass, in fall 2011.  While they do require access to an internet connection, webinars offer the convenience of learning at your home or office, avoiding the time and expense of traveling to a workshop. Everybody is welcome to attend.  There is no charge, but pre-registration is […]

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Help requested: Look for and report diseased buckthorn

Forwarding a request from Laura Van Riper, MN DNR’s Terrestrial Invasive Species Coordinator.  A ray of hope for buckthorn control!? Hello, As you are out and about this summer, could you keep a lookout for common/European buckthorn trees with witches’ broom/yellows disease symptoms?  Research to identify biocontrol insects for buckthorn has been on-going since 2001. A phytoplasma disease was detected in potential […]

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