lawn is dying-large brown spots with white worms at edge

Asked May 10, 2018, 10:12 AM EDT

Hello, This is the first year we have had this large area--20 x 10 feet where the grass is all dead. Attached picture of white worms I found at edge of green grass. How do I treat this? Thanks. Kent

Hennepin County Minnesota lawns and turf lawn grubs horticulture

3 Responses

The grubs you are seeing are very common and the population rises and falls on roughly a 3 year cycle. You are probably seeing the worst year in the cycle. https://www.extension.umn.edu/garden/insects/find/lawn-and-turf-insects/root-feeding/

Thank you. How do I get rid of them?

Read over the information in the fact sheets on the link and choose a grub control chemical. Or go to the garden center and buy some grub killer for lawns and apply it. A curative chemical must be used in spring.
http://msue.anr.msu.edu/news/how_to_choose_and_when_to_apply_grub_control_products_for_your_lawn