I have the standard ninebark and no problems. however, the 'gold leaf ninebark' gives me agita. 2 yrs in a row, it is plagued by (?) leaf spot, leaves fall off, bottom stems now looking fung-ie. I sprayed for fungus in early spring as it came out. also tried the rose spray for disease and pests - to no avail. it is slowly dying. before i pull it out, does anyone know the reason for this particular cultivar to be so disease ridden?