Pinecones on willows? I keep seeing these pin cone-like structures on the ends of sandbank willow branches along Duffins creek and always wondered what they were. They actually are not a natural part of the willow, but rather, the homes of Pinecone Willow Gall-midges (Rhabdophaga strobiloides). These midges secrete a chemical that forces the willow to create these pinecone-like pods to provide the midges food and shelter. The adult midge lays its eggs in the… Read More