I went to school for recreational land management and Mr B. went to school for forestry...niether went into those fields but we retained what we paid for [;)]( drop spelling & typing from that statement [8D])
I do have to say though I read alot ...and state field guides ....and of all things nursery catalogs are a great source of info...Musser trees is a great one as well as Carlo trees...Raintree nurseries in Origon...all on the web
