I'm from Houston.......you can NOT go wrong planting cuphea....especially the batwing variety and the cigarette as well......in my yard it has been a ten year perennial (undergoing many hard freezes over the years)......my hummers love them!!! And I have lots of relatives in Denton, a city where I attended Texas Woman's University....great place to raise a family.........
And good luck with your hummers..........