The flowerheads of Protea gaguedi grow solitary at stem-tips above the leaves. Flowerheads occasionally occur in clusters.
The involucral bracts overlap in several rows. They are pale green, densely covered in short, silvery hairs and sometimes with rusty brown margins. The bracts spread widely in the open flowers. Flowerheads are from 4 cm to 11 cm in diameter. The white or sometimes pinkish perianths are densely hairy and strongly fragrant.
The flowering season is variable, in South Africa from late winter to summer, peaking towards summer. The flowers attract birds and beetles.
The fruit is a hairy nutlet. The involucre remains on the plant, shallowly cup-shaped, long after the dry fruits have been dispersed (Coates Palgrave, 2002; Van Wyk and Malan, 1997; Rourke, 1980; iNaturalist).