Help! ... what is wrong w/ this R o Sharon?
Hello - I planted 4 Rose of Sharon (Chiffon) in '06. This #1 did very well & grew bigger & taller than the other 3. This season she is not leafing out as the other 3. There are a few small suckers close to her base doing well.
Her canes are turning rusty, crustier & exfoliating some ... . Is there a cure for her ailment? Linked pix taken today.
TIA for any help!!! Â;)
Here is a link that might be useful: Ailing RoS