Resources

Identifying and managing invasive Eurasian and hybrid watermilfoils in Michigan lakes: A response to differential sensitivity to herbicides

Published on December 19, 2022
Knowledge of what strain(s) of watermilfoil are present in a lake is very important when developing a management plan that includes control with herbicides.
RIPPLE invasive aquatic plant brochure

Published on August 11, 2022
This brochure highlights some of Michigan’s regulated aquatic plants that are prohibited or restricted from sale due to their invasive potential.
RIPPLE invasive fish brochure

Published on August 11, 2022
This brochure highlights some of Michigan’s regulated fish species that are prohibited or restricted from sale due to their invasive potential.
RIPPLE invasive crayfish brochure

Published on August 11, 2022
This brochure highlights Michigan’s regulated crayfish species that are prohibited or restricted from sale due to their invasive potential.
Using Bands to Protect Shade Trees from Spongy Moth

Published on May 4, 2022
Hiding bands and barrier bands can help protect individual shade trees from spongy moth, formerly gypsy moth.
Surveying Spongy Moth Egg Masses to Forecast Next Year’s Population

Published on April 27, 2022
Surveying spongy moth, formerly gypsy moth, egg masses, which are present for nine to 10 months every year, provides a means for pest managers to estimate how high a spongy moth population is likely to be the following year.
Dealing with Spongy Moth Around Your Home or Property

Published on April 27, 2022
Spongy moth, formerly gypsy moth, can be an annoying pest in residential, urban and rural areas as well as forests.
Spongy Moth Life Cycle

Published on April 27, 2022
Spongy moth, formerly gypsy moth, completes one generation each year. Eggs hatch in spring, typically between early and mid-May in much of Lower Michigan, and in late May or mid-June further north.
A Virus and a Fungal Disease Cause Spongy Moth Outbreaks to Collapse

Published on April 27, 2022
Two diseases that affect spongy moth, formerly gypsy moth, caterpillars are the most important factors causing outbreaks to collapse. One disease is a nucleopolyhedrosis virus (NPV) and the other is a fungus called Entomophaga maimaiga.
New Name, Familiar Pest: Dealing with Outbreaks of Spongy Moth, Formerly Gypsy Moth - Questions and Answers

Published on April 14, 2022
A spongy moth webinar, part of the NotMISpecies series, aired on April 14, 2022. Viewers submitted questions that have been addressed by the experts who presented the webinar. This document includes the questions and answers, grouped by topic area.