Chemical Fertilizers - Do they Affect Long Term Health of Roses?
Last year I fertilized with a chemical fertilizer for the first time. I used Vigoro 12-6-10 in March and June, and WOW did it make my roses pop.
I'd love to continue same this year, but I don't want to add anything for short term gain, that will impact the long term health of my roses. I'm pretty sure there is a line somewhere, where use of chemical fertilizers can be bad for roses. Would be interested to know where that line is?