You have answered your own question.
They are desert palm trees.

wrote in message
oups.com...
What type of palm-type trees can live year round, in the midwest? The
atmosphere where I live [in Dallas] varies greatly, from very hot to
very cold [100 degrees to 20 degrees] throughout the year. Rain also
comes & goes frequently. Obviously this is not a tropical climate, but
I've frequently seen people with evergreen palm-type trees that live
year round [typically found in backyards, or at restaurants]. Are they
desert palm trees? Does anyone have any idea what they might be? Thanks!