Cycas revoluta (Sotetsu [Japanese ソテツ], sago palm, king sago, sago cycad, Japanese sago palm), is a species of gymnospermin the family Cycadaceae, native to southern Japan including the Ryukyu Islands. It is one of several species used for the production ofsago, as well as an ornamental plant.
Of all the cycads, C. revoluta is the most popular in cultivation. It is seen in almost all botanical gardens, in both temperate and tropical locations. In many areas of the world, it is heavily promoted commercially as a landscape plant. It is also quite popular as a bonsai plant. First described in the late 18th century, it is tolerant of mild to somewhat cold temperatures, provided the ground is dry. C. revoluta usually defoliates in this temperate climate, but will usually flush (or grow) several new leaves by spring.