Agapanthus Dr Brouwer brings dark stems and blue-lilac, trumpet-shaped summer flowers to sunny borders and patio containers. The clump-forming perennial has strap-shaped green leaves, and its flowers darken with age.
Grow it in fertile, moist but well-drained soil in full sun. The flowers provide nectar and pollen for bees and other pollinators. The plant is harmful if eaten by people, dogs, and cats.