Seeds from Howea forsteriana. Kentia Palm, Sentry Palm and Paradise Palm. It is one of the worlds most popular indoor palms. It is also highly prized for its excellent appearance. The featherlike, charmingly drooping canopy of leaves grow up to 10 feet in length on thornless 4 to 5 foot stems. The leaflets are dark green on top and lighter green on the bottom and bend downward toward the slender trunk. Height 15 to 25 feet Spread 6 to 10 feet. Zones 9 to 11.