Trulia Voices: Where in the lower Rio Grande valley is there the soil and moisture so that I can plant a large vegetable?

Trulia Voices: Where in the lower Rio Grande valley is there the soil and moisture so that I can plant a large vegetable?http://www.trulia.com/voices/Going_Green/Where_in_the_lower_Rio_Grande_valley_is_there_the_-55447garden and small fruit orchard on about an acre of land at a reasonable cost?en-us