We modified top-rope and lead-climbing techniques to develop safe, efficient methods for climbing trees. Two individuals, the climber and belayer, were required for each technique. An ll-mm belay rope, tree pruners saddle, tree climbing gaffs, adjustable lineman's pole strap, and 2.54-cm tubular webbing were required. Top-rope climbing was favored over lead-climbing, and was preceived as substantially safer. Bark characteristics of tree species affected climbing difficulty. Both climbing techniques have application in forestry, botany, and wildlife research.