Papooseroot
Caulophyllum thalictroides
Last reviewed: July 2026
Caulophyllum thalictroides (Papooseroot) is a native woodland perennial blooming in April and May across eastern North America. This shade-tolerant forb produces small yellow flowers followed by distinctive blue berries.
The USDA PLANTS Database (opens in new tab) does not flag Papooseroot as toxic to livestock.
Light
part shade
Water
medium
Size
12"–24" H × 12"–18" W
Bloom
Apr, May
Native to
AL, AR, CT, DE and 27 more states
Pollinators
bees, beetles
Deer
Resistant (per Prairie Moon Nursery)
Papooseroot is a woodland native perennial that produces delicate clusters of small yellow-green flowers in spring before developing blue berries. This shade-loving plant has attractive compound leaves and naturally forms small colonies over time.
Growing Papooseroot
Grow Papooseroot in part shade and medium water. Mature plants reach 12 to 24 inches tall and spread 12 to 18 inches wide. Expect low maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
Papooseroot takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Very woodland-wild appearance
- Goes completely dormant leaving bare spots
- Uncommon plant that looks unfamiliar to most people
Wildlife value
The spring flowers provide nectar for bees and beetles during early season when few other plants are blooming.
Common questions
- When does Papooseroot bloom?
- Papooseroot blooms in April and May, producing small clusters of yellow-green to brownish flowers before the leaves fully expand.
- What pollinators visit Caulophyllum thalictroides?
- Papooseroot is pollinated primarily by bees and beetles that are active during its early spring blooming period.
- Where is Papooseroot native in the United States?
- Papooseroot is native to much of eastern North America, from Maine south to Georgia and Alabama, and west to the Great Plains states including Kansas, Nebraska, and the Dakotas.
- What growing conditions does Papooseroot prefer?
- This woodland plant thrives in partial to full shade with consistently moist, well-drained soils rich in organic matter, mimicking its natural forest floor habitat.
- Is Papooseroot toxic to livestock?
- The USDA PLANTS Database does not flag Papooseroot as toxic to livestock.
- Is Papooseroot HOA-friendly?
- Papooseroot takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow Papooseroot? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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