www.dirtdoctor.com
great info on organic growing in texas. for fire ants, i use compost tea full strength. usually one application sends them on their way. however, full strength is too strong for plants, as i understand it. we got the small ants in our compost pile last year. one of the dirt doctor's books said ants in the compost meant it was too dry, mold meant it was too wet. perhaps your plants weren't getting enough water. that's just a guess, as i am less than a beginner!! lol ...