Question: I recently purchased one of your 4-n-1 moderate climate apple trees from a local nursery. I'm interested in knowing if they're self-pollinating or do I need two? James, San Antonio, TX Answer: James, as much as I am sure the local nursery would like to sell you another one, you will not need two. Not only are three of the individual varieties (Gala, Early Summer Red, Granny Smith) self fertile, they will pollinate each…