The flowers are white to yellow and arranged in dense heads or short spikes on the ends of branches that continue to grow after flowering and sometimes also in the upper leaf axils. Each head is up to in diameter and contains up to 20 groups of flowers in threes. The petals are long and fall off as the flower matures. There are five bundles of stamens around the flower, each with 7 to 10 stamens. Flowering occurs from September to November, most prevalent in October but often at other times of the year. The fruit that follow are woody, cup-shaped capsules, long, wide, usually in tight, globular clusters along the stems.
