Crinum asiaticum is an evergreen, flowering, herbaceous bulbous perennial. Older specimens often form short pseudo stems up to 1m long and up to 20cm in diameter. Grows 0.3-1.2m tall with a spread of 1m. Fast-growing at a rate of 0.5-1m p/a. Crinum asiaticum is a perennial herb which may grow 1 m tall. It has a leaf base formed pseudobulb is spherical, the upper part of the bulb is cylindrical, and the base is laterally branched, with a diameter of about 6-15 cm. Leaves lanceolate, margin undulates, apically acuminate with 1 sharp-pointed, dark green, up to 1 m long, width 7-12 cm or wider; leaves 20-30 apiece.
The inflorescence is umbel that has 10-24 flowers, multiple petals, aromatic. Flower stem erect, as long as the leaf, solid. The spathe is lanceolate, membranous, 6-10 cm. Seeds large, exotesta spongy.