Does anyone know much about hazelnuts, Corylus avellana? I've been collecting plenty of nuts this year for eating and decided to keep the largest to grow on and plant up an area around our home. I'm curious about the huge variability of the trees I have, many produce small nuts but I've found some trees that produce much bigger nuts every year. I wonder if these are just common hazel nuts or if they are likely to be crossed with filberts or something? I also wonder if by saving the largest nuts if there's are likely to grow into plants that are more likely to produce large nuts? I will find out in a few years time.