What Are Crane Fly Larvae? Crane fly larvae, or immature crane flies, nest in the soil and attack grassroots and decomposing plant matter. Activity peaks in mild weather, often resulting in loose turf and increased surface vulnerability. On heavily used grass areas, this can interrupt play and increase upkeep requirements. https://school-grounds-maintenanc02567.blogmazing.com/37656583/h1-smart-methods-for-controlling-crane-fly-larvae-and-protecting-turf-health-h1