I am a new homeowner who has an arbutus menziesii in my back yard. It's about 12.5 meters tall. About 70% of its leaves are now curled and brown. There is new green growth at the crown of the tree. I live in a rural area, so I'm not certain if this is related to the urban stress and arbutus decline I've read about. The tree is surrounded by healthy huge conifers and is just outside the very edge of my septic field. I neither water or fertilize the arbutus, since I read it likes neglect. I don't see evidence of any fungal leaf spots. I love arbutus trees and would hate to lose this one. Can anyone advise me as to if this leaf browning is normal and/or provide me with any additional information? TIA.