Arborists often describe maples as having a "plate-like" root system. Major structural roots—typically 4 to 8 primary roots—radiate outward from the trunk flare like spokes on a wheel. These are relatively shallow but thick, providing anchoring stability.
Unlike some trees that send a deep taproot straight into the earth, most acers develop a shallow, wide-spreading root system. acer root system
There is a persistent myth that all trees need deep soil. For Acers, this is false. Arborists often describe maples as having a "plate-like"
I can give you a more tailored recommendation for . most acers develop a shallow