Abstract: The present specification relates generally to a tree climbing apparatus, and specifically to a wheel-operated tree climbing apparatus. The tree climbing apparatus includes a frame, including a first frame end and a second frame end, that is configured to receive a tree trunk, as well as a pair of rollers, including a first roller and a second roller, the first roller being securable to the frame, proximate to the first frame end and the second roller secured to the frame, proximate to the second frame end. The wheel-operated tree climbing apparatus also includes a pedalling system, whereby the pedalling system engages with and rotates at least one rollers of the pair of rollers and a motor, whereby the motor engages with and rotates at least one rollers of the pair of rollers. A related method of climbing a tree using a wheel-operated tree climbing apparatus is also described.