The flowers of Lasiosiphon polycephalus grow in stem-tip clusters, surrounded by broad and hard to papery, brown bracts.

The flower has a 1,4 cm narrow calyx tube that spreads into five narrow, oblong lobes. These lobes have margins that curve under and have variable, notched or squared tips. Yellow anthers protrude slightly from the corolla mouth. Flower colour is deep yellow or golden, sometimes orange. The outside of the tube is hairy, the broad base of the ovary more so, it being covered in long, silvery hairs.

One seed is borne in the single-chambered fruit. Flowers may arrive in winter and spring, but the name of januariebos (January bush) was earned for prolific summer flowering, often during times of drought when the competition is flowerless (Shearing and Van Heerden, 2008; Gledhill, 1981; Vahrmeijer, 1981; iSpot).