When you think in “tropical” concept you might imagine the Royal palm tree. Growing a foot a year, the Royal Palm can grow a 65 feet tall and 5-10 feet wide. The Royal Palm features a long, smooth trunk, a bright green crown shaft, and fragrant yellow flowers that bloom in the summer. Royal palms need a lot of water, but at the same time it’s moderately drought-tolerant. Also is a great shade tree.