Crinum graminicola inflorescences grow from nearly erect peduncles. There are from eight to thirty flowers in one inflorescence. The inflorescences are spectacular from mid-spring through summer.
The flowers are trumpet-shaped lilies. They start off as erect buds, drooping or inclined when fully open. The slender perianth tubes become from 7 cm to 11 cm long. The lance-shaped tepals are from 8 cm to 9 cm long, their tips recurving strongly. Each white tepal has a dark pink median keel band.
The stamens are angled downwards from the flower centre near the ovary, curving up near their anthers. The style is longer than the stamens.
The thick peduncle that was erect when flowering, reclines when the bunch of oblong to globose, reddish pink fruits exert their weight (Duncan, et al, 2016; iNaturalist; iSpot).