Question: My tree has roots that have become hazards on top of the ground. Can I put soil over them?
Answer: That just won’t work. In most cases, the tree’s roots have actually grown thicker in diameter, and then have worked their way up and out of the soil. Adding more soil would only buy you a little time before you had the problem again. It’s better to remove any that are terribly dangerous, then ignore the rest. You could also plant a vining or tall clumping groundcover over them, just to conceal them.