1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality. $ z! j8 o* C1 L) P8 _# a2. Reduce the use of chemical fertilizer and use organic one instead.
5 T, A2 e2 r! {% q7 G) `I should tell a bobcat is required if you wanna do the whole front/back yard OR just spot-excavation (dig a bigger and deeper than normal hole, dump the old dirt and back fill w/ good topsoil when you want to plant a new tree) if you gonna do the job yourself.