We have many old, abandoned farm sites around here. There are also many wild apple trees growing by the side of the road. These trees grow well, fruit regularly. They get no water besides what falls from the sky, no pruning...these puppies are on their own. Our annual rainfall is 17 inches. In the last few years I've noted where they are and have gone back when the fruit was ripe to taste the fruit. I only found 1 tree that was truly awful and I found at least 3 that I plan to propagate. 1 of those trees had outstanding fruit. These trees are tough, they are growing on their own roots so they are well adapted to low watering levels, our winters can get to 20 below and still they grow. I'll graft some, I'll plant some from seed and I'm going to take cuttings too. Mother Nature has already spoken on the viability of these trees in harsh conditions. I'll try her picks.