Washingtonia Filifera is a palm native to the southern and southwestern USA states and northwest Mexico. This palm grows up to 23 m (exceptionally 30 m) in good growing conditions. The leaves have a petiole up to 2 m long, bearing a fan of leaflets 1.5-2 m long, with white, thread-like fibers between the segments. When the leaves die they bend downwards and form a skirt around the trunk. Washingtonia filifera can live from 80 to 250 years or more and is reported to be cold hardy to -12C.