In this photo taken on Saturday, Feb. 9, 2013, Instructor Ted Smith holds up a chemical that is recommended in growing marijuana during the first class at THC University in Denver. Smit

 

              In this photo taken on Saturday, Feb. 9, 2013, Instructor Ted Smith holds up a chemical that is recommended in growing marijuana during the first class at THC University in Denver. Smit
In this photo taken on Saturday, Feb. 9, 2013, Instructor Ted Smith holds up a chemical that is recommended in growing marijuana during the first class at THC University in Denver. Smith told the first-time marijuana growers that chemical fertilizers work so quickly that some are called “bud rocket.” (AP Photo/Ed Andrieski)