Imagine your garden is an opera......which plants ooze charisma, and are happy to be the central character? Which plants work well to support them? Which…
Upright stems may need staking, particularly in a shady site.
By seed. Clumps take a long time to establish so only more mature plants can be successfully divided. Divide in early spring or autumn.
Pests, diseases or disorders
Fungal stem rot, Verticillium wilt and aphids may be a problem.