I'm in zone 9b (Orlando). The Florida Ag department has cut down all
(seven) of my Orange trees due to citrus canker. I'm trying to find a
replacement tree for one of my oranges that was providing shade to
some delicate foliage. I can't replant citrus for two years due to a
citrus canker quarantine.

The question..... what is a good replacement tree that grows to about
20Hx20W and keeps its leaves during our mild winters?

Thank you in advance.