6/29/2023 0 Comments Download cutworms in lawn![]() Every year, the adult moths migrate northward and arrive in Michigan in early to mid June. Life historyīlack cutworms overwinter and the southernmost regions of North America. Cutworms simply occupy the aeration holes when they are present on a green instead of making their own burrows.įigure 3: Black cutworm caterpillar. The caterpillars often use aeration holes for burrows, but aerated greens do not have more cutworm damage than greens that are not aerated. ![]() Their feeding damage resembles ball marks on golf course greens - round or depressed spots of dead turf (Fig. They emerge at night to feed on the roots and shoots of grass plants. Injuryīlack cutworms dig burrows in the thatch or soil of a golf course green. Although cutworms are also found on fairways, they rarely cause enough damage to be considered a problem there.įigure 2: Black cutworm eggs on bentgrass. It is a common problem on creeping bentgrass greens of golf courses, which can tolerate very little feeding injury. The black cutworm has many weed and crop hosts. ![]() The black cutworm is the species most likely to damage turf in Michigan.įigure 1: Damage caused by black cutworms. Cutworms are found throughout North America. The young cutworm feeds on plant material without cutting off the stems or leaves but later becomes a true cutworm when it begins to cut off foliage and carry it back to its burrow. Three species of cutworms are pests on golf course turf: the black cut worm, the bronzed cutworm and the variegated cutworm. ![]()
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