Key Takeaways Large trees often develop surface roots that can damage sidewalks, mower blades, and tree health.Mulch 2–3 inches deep to cover roots safely and reduce maintenance without harming the ...
Dear Neil: I have two weeping willows, one hybrid poplar and a river birch tree. They are all fairly close to one another. The willows and poplar are 2 years old, and I've had the birch for one year.