Developed by Mr. Lloyd Lee of Alberta. Lee 21 is considered by some to be the best of the Lee's. It is a crisp sweet apple, good for eating out of hand, but without a very distinctive flavor. It grows to 2.5" in diameter. Our trees are later than most of the others to leaf out and also late to set terminal buds in the fall. We had some tip dieback last winter, but the trees came back well. Not sure if this will be an ongoing problem, will have to wait and see. It is not very productive, and much less productive in our orchard than Lee 31 or Lee 17.