At the tail end of the growing season when other plants are giving up it flowers with dark blue bells and cheers things up. Has not increased much over last 8…
Needs rich, moist, fertile soil. Leave plants undisturbed for at least six years for best flowering, unlike evergreen Agapanthus.
By fresh seed in autumn or refrigerated seed in spring.
Pests, diseases or disorders
Red spider mite, thrips, Botrytis.