Understanding Leatherjackets and Their Effects Crane fly larvae, or larval pests, nest in the soil and consume grassroots and decomposing plant matter. They are most active in spring and autumn, often resulting in thinning turf and increased surface vulnerability. On sports fields, this can delay play and increase upkeep requirements. https://school-grounds-maintenanc98642.blogsmine.com/39103425/h1-sustainable-methods-for-managing-crane-fly-larvae-and-preserving-turf-health-h1