||Spray with lime sulphur mid winter. 1 part to 35 parts water. Trim off damaged leaves and burn.
||Dip/cover rhizome in “janola” or like product. 1 part bleach to 9 parts water. Allow to dry and replant.
||Spray with shield as per roses.
||Use fungicide, trim back leaves and bum them.
||Leaf fan appears like corrugated cardboard, cause not known. Could be due to unusual weather.