Dear Darren, I'm not trying to discourage people from answering your question, but do think that when a post from the past is quoted it is helped to check the archives for the discussion that followed it: http://pacificbulbsociety.org/pbslist/old.php/… Tomato fertilizer is the subject to look for. I found this to be a fascinating thread, especially the confirmation that tomato fertilizers vary widely and that we cannot share cross country the ratios since NPK ratios are not internationally compatible. Specifically the post from Lee Poulsen that included Jim Lykos' post is instructive. (O.K. I concede that in this situation including the whole post saved time, but I still would rather people not do it for the sake of digest subscribers.) http://pacificbulbsociety.org/pbslist/old.php/… Discussions about fertilizers are always interesting because there seems to be such a wide range of differences in what people do and what works and doesn't work so advice on what formula to use is difficult. So much depends on the plant, the climate, and the medium that plant is growing in. Mary Sue