Herbaceous border
A border planted with non-woody perennials that die down in winter and return each year.
Also: perennial border
A herbaceous border is made almost wholly of perennials such as delphiniums, phlox, lupins, asters and daylilies, set in drifts and graded by height. It peaks in summer and is bare in winter. The style was developed in Britain in the late 19th and early 20th centuries, and the designer Gertrude Jekyll is closely linked with its careful use of colour. Newer plantings mix in grasses and leave seed heads standing through winter.