Barrie
Are you growing sabal 'riverside'? My 'riverside' was the only sabal that continued to grow even though my polyhouse is kept rather cold in the winter. I have a 'birmingham' that is the same size and it did not grow at all. The 'birmingham' is just now pushing a new spear. In my limited experience I feel sabal 'riverside' is one of, if not the fastest growing sabal.
I had a 'Riverside' sometime ago ... hummm. I wonder where it is now?
Cheers, Barrie.