Can you transplant a gumtree after it's gotten up to 18 ft. tall?
Hardiness Zone: 6b
Growing sweet gum tree: Transplant when young -- the sweet gum resents root disturbance when it matures. Often, newly planted trees will scarcely grow at all for the first two or three years. Although this tree normally grows on rich, moist soils in the wild, it has proven itself quite adaptable in culture. In fact, it is one of the most pH-tolerant of all trees, thriving equally well in acid or alkaline conditions.