Answer to earthworm's ability to digest poisons unearthed by scientists
Earthworms drag fallen leaves and other plant material from the soil, digest them and excrete the rich mix of loam and living things called topsoil. Photograph: Dr. Manuel Liebeke, Max Planck Institute
All plants contain toxins which continue to work after leaf fall, so how worms are able to stomach dead grass and leaf litter has long been a mystery