I have had two experts come by my farm over the years to teach me how to prune my apple trees. The thing I found most interesting is the fact that even doing it wrong is better than not doing it all. Apple trees need to be pruned each year to keep producing well - even the old wild trees need to be pruned. So, if you have an old apple tree, or even have one on the farm you hunt on permission, now is the time to go in and make it better. I also learned that fertilizing apple trees is valuable.