I am in southwest Louisiana. Interesting what someone said above about different varieties liking or not liking lots of rain. Didn't know that. Anyway, what we have down here likes moist soil. If the soil is too dry it will bloom like gangbusters but not produce any nectar. I think that could be what is going on for you folks in NE Texas. My the same token, you probably all know that a good rain will wash pollen off of the blooms so typically you start getting some new nectar a few days after it rains.