The flowers of Crassula swaziensis grow on erect, stem-tip peduncles, from 4 cm to 10 cm long, well above the leaves. The inflorescences are flat-topped to slightly domed and tightly clustered.
Pointed sepals are visible on the buds in picture that still have their exposed white corollas furled in cone-shapes. Sometimes tinged pink in bud, the five-pointed, bell-shaped flowers are white and later cream, their petals recurving little or not at all. The older open flowers seen here are reddish inside, the younger ones greenish to yellow. Flowers are from 6 mm to 10 mm in diameter.
The branched peduncles are thick, fleshy and hairy. Flowering happens from before midsummer to after midautumn (Frandsen, 2017; Pooley, 1998; Van Wyk and Malan, 1997; Hardy and Fabian, 1992; iNaturalist).