The Holy Oak stood next to Basking Ridge Presbyterian Church in New Jersey for more than 600 years until it had to be removed. At its prime, the twisting branches spanned high and wide. Cool breezes rustled its green leaves and acorns. The sun peeked through wind-blown gaps, creating dancing glimmers of light in the shade below its canopy. But beneath the ground’s surface lay its true magnificence—its root system. An oak’s main root grows vertically, securing a reliable supply of nourishment. From that taproot, a mass of roots spreads horizontally to supply the tree with a lifetime of moisture…