2021 Gypsy Moth aerial treatment was completed on Wednesday, May 19th, between 6:00 and 7:00 am. for six locations based on 2020 Fall Egg Mass Surveys. Areas are safe to use or to be in following treatment. Fall 2021 egg mass survey will be completed by the City to help in determining 2022 recommendations.
All residents should report if they see significant gypsy moth activity near their property this summer and consider homeowner tactics to help protect your trees from Gypsy Moth.
Gypsy Moths in Rochester Hills
Gypsy moths are monitored annually by the City’s Department of Parks and Natural Resources’ Forestry Unit. Based on phone calls received and gypsy moths observed out in the field, Arborists may be triggered to do a city-wide egg mass survey in the fall. Due to natural controls, gypsy moths within Rochester Hills have not been at concerning levels throughout the community since the city’s last spray in 2004. Over the past decade, gypsy moths throughout the city have been kept in check with little to no threats observed. However, in 2018, an increase in resident calls triggered a city-wide egg mass survey to be conducted to help determine the extent of gypsy moth populations and better identify areas that may be a threat to our community tree canopy. If you suspect you are seeing gypsy moth activity, larvae, or egg masses, please call us and help us target our future survey efforts.
Click here to learn more about Gypsy Moths.