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.
This plant grows tall and wide, forming a substantial clump with kidney-shaped dark green leaves that die back in mid to late summer. It is cultivated for its broad, crinkled foliage and spectacular multi-branched inflorescences of small, fragrant white, cruciform flowers that bloom high in early summer.