A mature Dierama pendulum plant may develop a many-leaved, large clump or tussock. The narrow, grass-like leaves are fibrous, dull green to bluish green with acutely pointed tips. The leaves sometimes show parallel, longitudinal vein lines, clearer to see near the base.

The flower stem is arching and often branched. Two large, translucent and membranous bracts subtend the flower, the inner one smaller, brown to lined or possibly speckled (Leistner, (Ed.), 2000; Gledhill, 1981; iNaturalist).