The inflorescence of Kalanchoe sexangularis is a many-flowered terminal thyrse growing on a long, erect stalk. A few open flowers are present among many buds and spent flowers in the photo.
Each flower of K. sexangularis has four pale yellow to cream-coloured spreading lobes that taper to acute tips. The flower tube bulges around the ovary, the corolla is urn-shaped. Tiny bracts are visible on the branching stems of the thyrse.
Flowering commences in winter, continuing through spring (Smith and Crouch, 2009; Germishuizen and Fabian, 1982).