Shade tree root zone care avoids soil piles against trunks, aerates compacted areas

https://www.scribd.com/document/1048127115/Landscape-Renovation-Ideas-for-Sierra-Madre-and-Arcadia-Properties-145882

Shade tree root zone care avoids soil piles against trunks, aerates compacted areas, and uses mulch rings to reduce mower damage and conserve moisture.