The west side tends to be dominated by a canopy of oaks and cedars. Bill does get online, although infrequently. He may even be a source of palms for you. If he doesn't log on anytime soon, he will probably be at the next PSST meeting on June 13, which will be our annual tour of the San Antonio Botanical Gardens. Meeting details will be posted soon on the PSST website.
Some areas have full sun, some partial shade, and some mostly shade.
We have no landscaper and are also interested in where to buy them. We can drive to South Texas. Lastly, our soil is not good. The west side tends to be dominated by a canopy of oaks and cedars. He may even be a source of palms for you.