azatrol?????

hello,
i was wondering how late into flowering is it ok to use azatrol? my hydro guy says no later than week 5 but on All About Azatrol it says it can be sprayed right until harvest. any input is appreciated. hollaaaaaaaa

well you can spray up to the last 2 weeks ,just remember you also feed the plants azatrol as well and the longer you do this ,the higher the concentration in the plans .im sue it would make for a bad tasting bud .you can also spray drown your plants with water just before you harvest