Asparagus microraphis is an evergreen, dome-shaped shrub, which grows up to 1 m tall, with spreading branches bearing numerous branchlets covered by cladode fascicles. Its rhizome is typical with sharp cataphylls and woody, cylindrical roots. The stem of Asparagus microraphis is erect, ribbed and pale grey, with thin, sharp spines of about ± 4 mm long. The leaves are arranged in small dense clusters. It produces solitary, creamy or pinkish, hanging flowers, with central green stripes. The flowers are ± 8 mm in diameter and have a pleasant smell. It usually flowers in spring to early summer, from October to December. It bears orange berry-like fruits, which are ± 7 mm in diameter.