Piss elm tree. Is there an elm tree called a southern elm? Forgot your password? Members List. Ellen I'm sure you are looking at a Siberian Elm. What can you use to get rid of the bugs that eat thee leaves on an elm tree? Maude Grieve recommended in her book, A Modern Herbal, that only year-old bark should be harvested. No, create an account now. I have never heard of an Oriental elm but there are two species that originate in the.