So is mulching around your tree actually beneficial?? Sure is!!! The benefits of adding a mulch layer under your tree are huge, it will add nutrients, stabilise temperature, control moisture, improve soil quality and lots more. The further you can spread the mulch layer the better, ideally to the outer edge (drip line) of the branches, and around 5-10 inches deep. But remember to leave a space around the trunk of a few inches.
Sit back and watch your tree enjoy the benefits of mulch!