The stem-tip flowers of Crassula obtusa grow solitary or in clusters of up to five. They are long-tubed, up to 3 cm long. The pale green tubes are clutched at the base by five acutely pointed, green or red sepal lobes.

The five spreading petal lobes are elliptic to slightly obovate, acutely pointed and white, fading pink. The corolla is about 1 cm in diameter. The flowers are fragrant after dark.

Flowering happens from later spring to after midsummer (Vlok and Schutte-Vlok, 2015; Manning, 2007; Bean and Johns, 2005; iNaturalist).