Abstract: Exemplary embodiments provide an apparatus and method of use for more easily and reliably stimulating root growth on the limbs of plants or trees. The apparatus securely locks in place around a limb of a tree, and a root growth medium is placed inside the apparatus around a limb of a plant or tree. A watering tube and viewing port are also provided. After a period of time, roots grow inside the root growth medium, the apparatus is removed, the limb is severed from the plant or tree, and the limb and newly-formed root ball are planted.