Gary,
The Wilma and Opal avocados are from Bill Schneider of Devine Avocados in Devine, TX. Its near San Antonio, TX. His large Opal tree survived a 14 deg night. The Wilma is supposed to be about the same.
Bill isnt much for emailing. He emailed that I could stop by and pick one up. Thats over 1400 mile drive each way for me. I emailed him about mailing me a Wilma and an Opal. He never answered.
Also, I dont know if they are A or B blooming avocados. He sells gallon grafts for $40 if you can drive there.
But find out how big they are and the price at the nursery. See if the nursery ships. I still haven't found a source for them that ships.
Terry
Opal
Wilma