Symphytum
Cheerful spreaders, Symphytum (Comfrey) are rhizomatous herbaceous perennials adorned with a basal rosette of coarse, hairy leaves and upright stems boasting charming clusters of tubular or narrowly bell-shaped flowers. They are an excellent choice for woodland gardens, cottage gardens or wildflower gardens where they can form attractive colonies over time. They make fine groundcovers, but site them with care: they spread freely and are difficult to eradicate. Easy to grow, they are most suitable for moist areas in sun or dappled shade.