Why would anyone spend their money and time to become licensed just to give away free info to help the competition do a good job. Lol The fertilizer calculations, mulch calculations, soil calculations, soil chart, UTFC, etc. are all in the licensing manual from the LDAF Horticulture Commission. If your serious about being a "Quality" landscaper then you might want to get yourself one. If not, then keep eye balling everything so I can be the best out there.