General Culture:

Best grown in organically rich, medium to wet, well-drained soils in part shade. Soils must be kept uniformly moist and not allowed to dry out. Best performance occurs in cool summer climates where night temperatures consistently dip below 70 degrees F. a cultural preference that unfortunately does not fit the profile of a typical St. Louis area summer where the plant often labors. In optimum growing conditions, plants may spread to form large clumps by both stolons and self-seeding.

Noteworthy Characteristics:

Masterwort (sometimes also called great masterwort) is an umbelliferous, stoloniferous, clump-forming perennial which typically grows 2-3' tall. Flower is a domed umbel of greenish-white or pink florets subtended by a showy ruff of papery, petal-like, greenish or pinkish tinged involucral bracts which extend beyond the flower. Medium green leaves are palmately cut into 3-7 (usually 5) toothed lobes. Leaves appear primarily in basal clumps, with smaller versions on the stems. Long late spring to early summer bloom. Bracts usually remain attractive well after bloom.