What are these caterpillar-like things on my hazelnut tree?
February 5, 2005 7:25 PM Subscribe
I have a hazelnut tree. Each year at this time, the tips of the branches extrude 2-3 inch long caterpillar-like growths which drop off. What are these called, and what is their function? This is undoubtedly a simple question which many can answer, but nevertheless hard to google.