As concerns for declining pollinator species continue to buzz throughout the country, the Illinois Department of Transportation is reminding the public of a change in mowing operations designed to encourage the growth of pollinator species along state roadsides.
The updated mowing routine, which began last May and was reinstituted this month, helps to re-establish plants that provide habitat for birds and that are food sources for bees and other insects native to Illinois, including the official state insect, the monarch butterfly.
The new mowing policy adjusted mowing frequency and timing as well as limiting the use of herbicides on state rights of way. Except for certain areas, crews now mow 15 feet beyond the edge of the road. The untouched vegetation encourages the growth of milkweed, the only food source for monarch caterpillars.
Designated the official state insect in 1974, the monarch butterfly population has gone down 80 percent in the past 10 years. Gov. Bruce Rauner has declared May as "Monarch Butterfly Month" in Illinois, calling on all Illinoisans to help in the restoration of the monarch butterfly population.