How to convert systemic chemical fed rose bushe to organic roses?
I bought a new property with 16 established (15 year+) rose bushes. Most of them are from the original Jackson Perkins line. The original homeowner has been continually feeding the roses Bayer 2 in 1 systemic fert+insecticide granules on a schedule at regular intervals. I do not even want to think about all the chemicals inside the plants. I want to wean them off from all the systemic toxins - is this possible at all? How do I do this? The bushes are in good condition that I do not want to rip them out. Though if that is the only way, I might have to consider doing it. The recent downpours of rains we have been having might have leached some of the toxins out of the ground?
I cleared the weeds and applied 2-3 inches of compost around each bush already.
Please guide me through the steps I need to follow from here. Thanks for your help.