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Earthworm — Lumbricidae spp

© Copyright 2017
© Copyright 2017

Distant: Small (0.5 to 1.0 inch diameter) mounds of pellets of soil or flattened mounds that may cover and smother short-mowed turfgrass and dull mower blades.

Up close: When turf is growing on clay or heavy silt soil the earthworm castings (0.5 to 1.0 inch diameter) are heavy in consistency and can damage turf when they are pressed down by mowers, carts or foot traffic. The castings piles are of much lighter material if on sandy soil and will fall around the grass blades when they dry out or are hit by irrigation water.