Leaf lesions on Tibetan cherry tree
Thank you for your question. The tree appears to have the virus described here: https://extension.oregonstate.edu/sites/default/files/documents/12281/pruningtreesshrubs.pdf This is a problem which cannot be cured, and tree (or orchard) removal is recommended. But, before doing so, I suggest your neighbor send leaf samples to the OSU Plant Clinic for analysis. Here is their contact information, along with collection and fee data: https://bpp.oregonstate.edu/plant-clinic Hope this is helpful. Good luck!
Thank you Kristina for your prompt response. I think maybe you linked to the wrong file.
You’re right. Sorry! https://pnwhandbooks.org/plantdisease/host-disease/cherry-prunus-spp-necrotic-rusty-mottle-lambert-mottle-rusty-mottle