Andersonia sprengelioides is a dense, cushion- or mat-like shrub that typically grows to a height of . Its leaves are lance-shaped to egg-shaped, mostly long and usually grooved. The flowers are arranged at the ends of the branches in groups of three to twelve with leaf-like
bracts usually shorter than the flowers and shorter, boat-shaped
bracteoles. The sepals are lance-shaped, pink to blue, mostly about long and sometimes hairy. The petals are pink or bluish-purple, forming a tube with lobes one half to three-quarters as long as the petal tube and bearded in the lower half. The
stamens are about the same length as the petal tube, the
anthers about long. ==Taxonomy==