Plant agapanthus bulbs in spring once the chance of frost has passed, and in colder climates protect the roots with mulch. Agapanthus bulbs will do best in well-drained soil and enjoy full sun. 2.

If you want it to rebloom, wait until late June or early July and relocate the plant to a sheltered outdoor spot that gets part sun. Water regularly, but don’t allow the planting mix to become ...

'Plant the corms 3–5 inches deep in full sun, and in good organic soil,' he advises. 'Once the plant is established, you can dig up offsets from the corms and share them with your friends.