Asparagus macowanii is an erect, decisuous, single stemmed shrub that can reach heights of up to 1m. It has long smooth stems with white, short spines both hooked and straight. The leaves are dark green needle like foliage about 15mm long carried in clusters of about 50 together. The flowers are masses of tiny white flowers about 6mm in diameter borne between August and November. It is a very attractive shrub attracting many birds and insects to the garden. It is often used in flower arrangements and lasts very long in them. They are drought and frost resistant. The berries borne in summer attract birds.
Asparagus macowanii can be an attractive feature near a pond, in mixed borders or in mass planting as a groundcover. It does well in a container, in a rockery or on a retaining wall. The flowers attracts bees and butterflies.