A tree support assembly may include three or more adjustable legs and a support ring. The support ring may include a first half and a second half that each includes a first end and a second end, a hinge pivotally connecting the respective first ends of the first half and the second half, and a protrusion extending from the second end of the first half. Additionally, the support ring may include an opening disposed within the second end of the second half, in which the protrusion of the first half may be positioned within the opening of the second half in a closed-ring configuration. The support ring may also include a securing feature and an engaging feature that engages with an arm of the securing feature in the closed-ring configuration. In addition, the support ring may include three or more receiving cavities that each receives one of the adjustable legs.