Well I am new to the lawn forum and have been trying to learn as much as possible. I made my first purchase yesterday which included Celsius and prodiamine, after reading this forum. I have already put down sta-green crabex (diothiopyr) on my centipede on Feb 11 but my yard is already out of control with weeds from previous years of abuse. I believe I may have been a little late with the pre emergent considering I live on the gulfcoast. I was planning on spraying all my weeds this weekend with Celsius and was not sure when I should put down the prodiamine. I also am trying to prevent another year of chamber bitter. Any advice would be greatly appreciated. I have a lot to learn and know my yard needs a lot of love.