The Q&A Archives: Worms In Lawn

Question: After I water my lawn, I notice hundreds of dead worms, why?

Answer: Worms are present in healthy soils and are always considered beneficial critters. Worms aerate the soil and consume organic debris, leaving rich humus behind in the form of castings. During a heavy rainfall, or a thorough soaking of the lawn from a sprinkler, the water can eliminate air from the soil which causes the worms to move toward the surface. Worms slither along on a film of moisture. If the moisture dries up quickly, worms can become marooned. This is more likely to happen during spring and summer when worm populations are high and strong sunshine can dry the surface of the lawn in a hurry.

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