The Mexican Fan Palm is a tall, vigorous palm that quickly grows a stout trunk. Trunks are topped by a crown of large (1.5m wide or more) fan leaves that have loose threaded margins and often a purplish brown patch at the base of the leaf stalk. Although often scorched by frost below around -5C or so Washingtonia robusta quickly regrows when the weather improves and replaces the damaged leaves.