Understanding Leatherjackets and Their Effects Crane fly larvae, or larval pests, nest in the soil and feed on grassroots and decomposing plant matter. Activity peaks in mild weather, often resulting in patchy turf and increased surface vulnerability. On grounds in use, this can interfere with play and increase upkeep requirements. https://school-grounds-maintenanc07529.total-blog.com/h1-smart-methods-for-controlling-crane-fly-larvae-and-preserving-turf-health-h1-64026960