This quote is from Howard's book, Plants for Texas, 1996.
"Fruit trees do well in Texas under organic management. The best choices include apples, pears, pecans, blackberries, figs, peaches, plums, elderberries, and strawberries. Few are native to Texas, but many introductions can be grown here in healthy soil under thick mulch or cover crops. Interplanting and biodiversity are again very important."
Go to the Womack nursery web site, http://www.womacknursery.com
, and request a free catalog. They have been in the fruit tree business in Texas since 1937.