For an absolutely show-stopping conifer, look no further than the monkey puzzle tree (Araucaria araucana). "There’s no other conifer tree like this species," says Eric Preston Stout, expert gardener and landscaper at TeachMe.To. "It is a spiral arrangement, radially spreading evergreen with leaves that resemble a Fibonacci sequence." The whorled leaves also have a spiky, scale-like quality to them. It's definitely an ornamental choice versus a hedging option. Also, it’s best to plant an already established tree since it’s very slow-growing in its early years. Once mature, however, it starts taking off.