Managing Turfgrass Pests in Wisconsin

Chris Williamson, John Stier, Jeff Gregos, Roger Flashinski Revised:  5/11/2010 Item number:  A3714 Turfgrasses cover more than 30 million acres in the United States. The majority of this acreage is comprised of over 50 million lawns, the remainder is divided among golf courses, athletic fields, sod farms, cemeteries, and other related sites. In its many […]

Home Turf Insecticides

Karen Delahaut, UW-Madison Fresh Market Vegetable Program Revised:  5/11/2010 Item number:  XHT1095 Recently, several commonly-used insecticides for the control of insects in home lawns have been taken off the market.  As a result, it’s becoming ever more challenging for home gardeners to find suitable insecticide products at garden centers, discount stores, and hardware stores.  This […]

Phenology

Karen Delahaut, UW-Madison Fresh Market Vegetable Program Revised:  5/17/2012 Item number:  XHT1085 The word phenology is derived from the Greek word phaino meaning “to show” or “to appear”.  Phenology is a branch of science that studies the relationships between periodic biological events—usually the life cycles of plants and animals—and environmental changes.  Natural events such as […]

Degree Day Calculation

Karen Delahaut, UW-Madison Fresh Market Vegetable Program Revised:  8/6/2012 Item number:  XHT1086 Indicator plants are not always suitable for the timing of pest management practices.  You may not have the critical indicator plant  nearby to time local activities, or there may not be a good indicator plant for a particular pest’s crucial life stage.  Another […]

European Chafer

A serious insect pest of turfgrass, the European chafer beetle was first reported in Door County, Wisconsin in 2016. European chafer grubs voraciously feed on turfgrass roots and cause thinning, wilting, and irregular patches of turf that can easily be pulled back or rolled up from the soil. This fact sheet details the life cycle of the European chafer and offers insecticide recommendations for grub control.

Japanese Beetle

The Japanese beetle, Popillia japonica, is a significant pest of landscape trees and shrubs, vegetable and fruit crops, and turfgrass in the eastern United States. This factsheet describes the lifecycle of this destructive beetle along with management and control options.

May/June Beetles

May/June beetles or “Junebugs” (Phyllophaga spp.) are beetles in the family Scarabaeidae. These native insects are common throughout Wisconsin and can often be seen flying near lights or heard hitting window screens on early summer evenings. Learn more about these large beetles and their larva, found in the soil, in this factsheet.

Field Ants

Phil Pellitteri Revised:  1/25/2011 Item number:  XHT1204 One of the most common ants in Wisconsin is the field ant (Formica spp.).  This ant is noted for producing large mounds that can ruin the aesthetics of home lawns, make lawn mowing difficult, and interfere with the growth of herbaceous and woody ornamentals. Appearance:  Field ants are […]

Turfgrass Disorder: Greenbug

Revised:  5/11/2010 Areas of discolored turf, ranging from pale green to yellow to burnt orange, often occur under shade trees and may be caused by greenbug feeding. A small sucking insect, greenbug (Schizaphis graminum) is a type of aphid. Since the 1880s it has been recognized as a pest of various grassy plants and has […]

Turfgrass Disorder: Chinch Bug

R.C. Williamson, D.L. Mahr, R. Kachadoorian Revised:  5/11/2010 Item number:  A3237 Chinch bug (Blissus leucopterus) is an important insect pest of turfgrass in Wisconsin: every year infestations cause serious injury to some lawns. Fescues and bentgrasses are most commonly damaged, with certain cultivars more susceptible than others. The chinch bug is also a pest on […]

Home Landscape Insecticides

Karen Delahaut, UW-Madison Fresh Market Vegetable Program Revised:  8/13/2012 Item number:  XHT1096 Recently, several commonly-used insecticides for the control of insects on woody landscape plants have been taken off the market.  As a result, it’s becoming ever more challenging for home gardeners to find suitable insecticide products at garden centers, discount stores, and hardware stores.  […]

White Grub Control in Turfgrass

Authors: PJ Liesch and Vijai Pandian, UW-Madison Extension Last Revised: 11/19/2020 X-number: XHT1018 Several species of white grubs are considered turfgrass pests in the Midwest.  These grubs are the larval stages of scarab beetles such as Japanese beetles (see University of Wisconsin Garden Facts XHT1062, Japanese Beetle), May/June beetles (see University of Wisconsin Garden Facts XHT1240, May/June Beetles), European chafers […]

Support Extension