Last fall, I planted a Japanese Tree Lilac in my front lawn...it is currently 7 feet high and is supposed to get between 15-25 feet. However being a total newbie, I didn't consider where my sewer line is and I think I may have planted the tree nearly on top of it.
Since its only an ornamental tree, should I be worried and possibly remove or move the tree?
Home is 50 years old...neighbor's sewer just backed up the other week.
Thanks, Mike