The Joey Palm Tree, scientific name Johannesteijsmannia altifrons, is an exotic palm with large undivided green leaves that will make any area or landscape feel much more tropical. It is also a great addition for any home or office. Joey Palm Tree can tolerate cold temperatures down to 25F. The root system is very sensitive to the cold and should be protected if temperatures drop below freezing. It is great for growing in the USDA Zones 9b (25 to 30 F) to 11 (above 40 F). It is much tougher and more cool tolerant than one might expect, and will grow happily in the subtropics and, of course, any tropical climate, in a shady, wind-protected situation. It has been proven to do well, for instance, in coastal southern California, southern Spain, or southern Florida, and can even be kept as a striking indoor plant. Surely one of the most stunning and spectacular palms in the world, J. altifrons has large, simple, undivided leaves that can reach a length of more than 6 m (20 ft.), rising directly from an underground rootstock. These huge, very leathery, roughly diamond-shaped leaves are pleated along their length, giving the most bizarre appearance. The Joey grows in montane rainforest in S Thailand, peninsular Malaysia, Sumatra, and Borneo, at up to 1200 m (400 ft.).