Shade tree root zone care avoids soil piles against trunks, aerates compacted areas
https://www.scribd.com/document/1048901987/The-Best-Time-to-Start-a-Landscaping-Project-in-Southern-California-188757
Shade tree root zone care avoids soil piles against trunks, aerates compacted areas, and uses mulch rings to reduce mower damage and conserve moisture.