Culture
Best grown in evenly moist, humusy, acidic, well-draining soils in part shade. Adaptable to a variety of growing conditions including average garden soils, neutral soil pH, full shade, and full sun (with adequate soil moisture). Tolerant of occasional drought once established. Can be slow to establish.
Noteworthy Characteristics
Porteranthus trifoliata, common called Indian physic or Bowman's root, is an upright, clump-forming, somewhat bushy perennial which typically grows 2-3' (less frequently to 4') tall. A native plant to the eastern and southern United States (including Lawrence County, Missouri). Features masses of slender, 5 petaled, star-like, white flowers (1" across) held in loose corymbs on wiry, branching, distinctively red stems in late spring to early summer. Attractive red calyces persist after petal drop. Trifoliate, almost stalkless leaves feature oblong, serrated, olive-green leaflets (1.5-4") which turn red in fall. Synonymous with and sometimes sold under the name Gillenia trifoliata.
Genus name honors Thomas Conrad Porter (1822-1901), American botanist.
Specific epithet refers to the trifoliate (3-parted) leaves.
Problems
No serious insect or disease problems.
Uses
Interesting plant for the border or native plant garden. Mass to take advantage of the airy effect of the bloom. Attractive red foliage in autumn.