Sago palm's description
It is a very slow-growing, symmetrical plant that produces a crown of shiny, arching, palm-like, evergreen palmate leaves atop a shaggy upright trunk. Trunks take a long time to form (1 inch diameter trunks may take years to eventually reach 12 inch diameter). Young plants typically grow to 2-3ft tall over several years, but may take 50 or more years to eventually reach 10' tall. Arching pinnate leaves (to 3-7' long depending on age) form a loose, feather-like rosette with leaflets to 7 inchlong. Each leaf has a large mid-rib with very narrow, rigid, spiny-tipped, deep green leaflets. Leaflets have revolute edges (margins rolled downward), hence the specific epithet. Young sago palm plants produce leaves intermittently in several different growth spurts per year, however mature plants only produce leaves once per year.