What Are Crane Fly Larvae? Crane fly larvae, or immature crane flies, nest in the soil and consume grassroots and decomposing plant matter. Activity peaks in spring and autumn, often resulting in loose turf and increased surface vulnerability. On grounds in use, this can interrupt play and increase upkeep requirements. https://grounds-maintenance-for-s43185.alltdesign.com/h1-proactive-methods-for-managing-crane-fly-larvae-and-improving-turf-health-h1-57496200