I asked the same question from the nursery on 90 and 87 when we bought some tall grasses. The grasses are drought resistant and we had planted some shrubs in the same area last year at this time. We planted about twenty shrubs and lost about 16 of them. The man told me with a palm tree you need a great deal of water. He did not have one which was drought resistant. I would think you would have to sprinkle any new planting around the base for a good while until it was established, but if you are putting it in a high, dry, sunny area it sure sounded like you need to have permanent sprinkling on a palm. I know I did not answer your question, but I think most of the standard palms that are being sold do pretty well when sprinkled.