Much bare stem leads up to the clusters of Greyia sutherlandii leaves and flowers. The younger the stems, the smoother their bark. New leaves appear on old wood only where a new branchlet sprouts. Flowering starts late in winter, continuing beyond midspring.
The scarlet red inflorescences grow nearly horizontally in stem-tip racemes, concurrently with the appearance of the new season’s leaves. The pedicels are about 1 cm long, the flowers about 2 cm and the dense flower clusters about 10 cm in diameter. The petals form a bell-shaped corolla and do not taper at the base.
The stamens protrude in abundance beyond the petal tips, clarifying the bottlebrush of the common name. Gloss on the plant's leaves completes the picture of the glossy bottlebrush name.
The conical to cylindrical fruits are divided into four or five sections (Coates Palgrave, 2002; Schmidt, et al, 2002; Pooley, 1993; iNaturalist).