Agapanthus campanulatus is deciduous, as are three more of the seven South African species of this genus.
The umbels carry ten to thirty flowers with varying shades of blue as well as a central darker blue line down each petal. Flowers appear on long stalks typical of the Agapanthus genus and finish blooming by early autumn. The anthers are blue and the pollen lilac, characteristics shared with some other Agapanthus species
A. campanulatus grows in spring and summer in the Drakensberg area and is dormant during the cold and dry winter. Neither of the two recognised subspecies is considered to be threatened in its habitat early in the twenty first century (www.plantzafrica.com; http://redlist.sanbi.org).