species 426 observations
Whorled Horse-balm
Collinsonia verticillata
Field notes
Collinsonia verticillata is a species of flowering plant in the mint family known by the common names stoneroot, early stoneroot, whorled stoneroot, and whorled horse-balm. It is native to the United States, where it occurs in the southeastern states, especially the southern Appalachian Mountains, its distribution extending north to Ohio.
This rhizomatous herb has two to three pairs of leaves and an unbranched inflorescence bearing white, pink, or lavender flowers, each with four stamens.
The plant grows in rich soils in mountain forests. Besides this, very little is known about this species.
Read more on WikipediaRange
Greener is more native, amber more introduced; paler is less certain. How this was decided
Key traits
- Layer
- Herbaceous plants
- Light
- Part shade
- Moisture
- Well drained Moist
- Soil pH
- Alkaline
- Deer resistant
- Yes
- Habit
- Erect
- Plant type
- Perennial Wildflower
From NC State Extension and USDA PLANTS.