American Goldthread
Coptis trifolia
Last reviewed: August 2026

Toxicity unknown
American Goldthread (Coptis trifolia) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
part shade
Water
medium
Size
2"–6" H × 3"–8" W
Bloom
May, Jun
Native to
CT, IN, MA, MD and 12 more states
Pollinators
beetles, flies
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 452 programs across 44 states, each with a link to the provider and the date we last checked it.
Find rebates in your areaBrowse plants for this ecoregion
American goldthread is a low-growing evergreen groundcover with distinctive three-lobed leaves and small white flowers in late spring. This shade-loving native thrives in moist, acidic soils and spreads slowly to form neat carpets under trees and shrubs.
In an HOA neighborhood
American Goldthread is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.
Works well in: front yard, foundation, mid zone.
Wildlife value
The small white flowers attract beetles and flies during May and June blooming period.
Common questions
- How much sun does American Goldthread need?
- American Goldthread grows best in part shade conditions.
- When does American Goldthread bloom?
- American Goldthread blooms in May and June.
- Where is American Goldthread native?
- American Goldthread (Coptis trifolia) is native to CT, IN, MA, MD and 12 more states, per vouchered herbarium specimen records and regional native plant society lists.
- What pollinators does American Goldthread attract?
- American Goldthread draws beetles and flies.
- Is American Goldthread HOA-friendly?
- American Goldthread is generally an HOA-friendly choice in the right placement, with low maintenance.
Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
If something looks wrong
Common plant problems, and what to check first
These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.
- It is dying right after planting
- Leaves turning yellow
- Wilting even though I watered it
- Brown crispy leaf tips
- Bugs on the plant
Ready to grow American Goldthread? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Planning a bed around it? Start a free plan with this plant
Not sure where to start? Take the 2-minute yard quiz