On the tomatoes....ditto what eddiemigue said.
Prune them...break off almost all of the suckers. With the heat and humidity in TX, they need air movement. Otherwise you'll have lots of disease.
http://www.johnnyseeds.com/t-videotomat ... omatoSeeds

Cilantro....(can you post pictures ?)
-It may be getting too warm (in TX) for it...?
-It may need some iron. (your PH should be around 6.8-7)
-Check your local hydro shops for 'maxi-crop with iron'.