California or Mexican Fan Palm
Washingtonia filiferra or robusta
Washingtonia Palms are probably the most common palm in the Rio Grande Valley. They line our highway system and decorate many of the large buildings and developments.
I have listed this palm both under Cold Hardy and Tropical Palms. The California Fan Palm (which is a little shorter and has a thicker trunk) is more cold tolerant. The Mexican Fan, recognized by its tall, skinny trunk, is only cold hardy to about 20 degrees Farenheit. Some of these died in the 1980's freezes in the Rio Grande Valley.
Washingtonias cross pollinate so many of these palms are hybrids.
Queen Palm or Cocus Plumosa
Syagrus romanzoffiana
Cocus Plumosa is the most commonly used feather palm in Southern Texas. It has solitary trunks and long, arching leaves.
A fast grower, it is not unusual for a Queen Palm to grow 2 to 2-1/2 feet a year. Used as a specimen, it is especially attractive planted in groups of three. Originally from Southern Brazil and Argentina, this palm is hardy to zone 9B. According to Betrock's Cold Hardy Palms, it is damaged but recovers from 24 degrees temperatures.
These are field grown, balled and burlapped, and sold by the clear trunk foot.