There is no treatment I am aware of. Once infected the cedar remains infected. Apples and pears (and relatives) generally get infected on deciduous areas and reinfect every year. I do have some hawthorns that seem to stay infected.
I cleared the cedars and replaced with holly for wind and habitat.
Standing on the shoulders of giants. Giants with dirt under their nails
An elephant? An actual elephant. Into the apartment. How is the floor still here. Hold this tiny ad: