American boneset is a tall, colony-forming perennial with joined leaf pairs and white flower clusters in late summer and autumn.
- Height
- 121–183 cm / 4–6 ft
- Spread
- 91–122 cm / 3–4 ft
- Light
- Full sun / Partial shade
- Soil moisture
- Moist, well-drained
- Flowering
- Fall, Summer
- Maintenance
- Low
- USDA zones
- 3a–9b
Planting
Use sun or partial shade in moisture-retentive soil with plenty of organic matter. It suits rain gardens and pond or stream margins where water is consistently available.
Care
Keep the root zone moist through dry spells, as drying soil can scorch the leaves. Allow room for its rhizomes to form a wider colony.
Before planting: Plant parts are toxic if swallowed, and handling can cause skin irritation.
Planting American boneset?
Find a landscaper nearby to help with planting and establishment.
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Sources & photo credit
Plant reference: NC State Extension Gardener Plant Toolbox. Content checked . Flowering seasons vary with local climate; USDA zones describe winter cold tolerance.
- American boneset: H. Zell · CC BY-SA 3.0. Resized, converted to WebP and cropped for display.
- 'Dilys' geranium: Krzysztof Golik · CC BY-SA 4.0. Resized, converted to WebP and cropped for display.
- Adam's needle yucca: Carl Lewis · CC BY 2.0. Resized, converted to WebP and cropped for display.
- American alumroot: Behnke Nurseries, Inc. · CC BY 4.0. Resized, converted to WebP and cropped for display.