 Growing to tall by broad, it is a substantial clump-forming herbaceous perennial with kidney-shaped dark green leaves, or more in length, which die down in mid- to late summer.It is cultivated in gardens for its broad crinkled foliage and spectacular multi-branched inflorescences of many small fragrant white, cruciform (cross-shaped) flowers, reaching up to high and appearing in early summer.Under droughty conditions the foliage depreciates.