Bismarckia nobilis Silver palm. The Bismarck Palm has a single smooth trunk topped with 20 to 25 wide fronds forming a spherical crown. Younger Bismark Palms have grey trunks covered with old leaf bases which get smoother as it matures. They have palmate waxy leaves supported by thick stems. Stems are 8 to 10ft long and 10 inches in diameter and are covered with small sharp teeth. A Wide spread of beautiful silver green leaves can reach 10ft across and is one of the most desired fan palms. It is a native to the island of Madagascar which is off the east coast of Africa. Bismarckia nobilis is a massive palm that will give dramatic effect to any landscape. This palm can be used as a focal point or for shade and screening and can also tolerate cold temperatures down to 15F. Zones 9 to 11.