The rose bushes in the front and my young citrus trees about 100 feet away have been losing thorns and leaves for the past year. I use insecticidal soap and appropriate fertilizer (one for citrus specifically and one for roses specifically). I also use ag lime to neutralize ph. I cut back the bushes/trees and they came in fine but now we are back to losing thorns and leaves again. Does anyone know what I might be dealing with? I'm in south central Florida in zone 9b. Thanks.