Threeleaf Goldthread (Coptis trifolia) is in the buttercup family family (Ranunculaceae). Across the U.S., iNaturalist users have logged 1,547 research-grade flowering observations of it in our sample, peaking in May.
Nationally it blooms mainly from May to May, but timing varies a lot by state and elevation — see the table below.
When to photograph Threeleaf Goldthread: observations by month (U.S.)
About Threeleaf Goldthread
Coptis trifolia (syn. Coptis groenlandica), the threeleaf goldthread or savoyane, is a perennial plant in the genus Coptis, a member of the Ranunculaceae family.From Wikipedia via iNaturalist — article, CC BY-SA.
Threeleaf Goldthread by state
| State | Observations | Peak month | Main season |
|---|---|---|---|
| Vermont | 333 | May | May–May |
| Maine | 248 | May | May–May |
| New Hampshire | 241 | May | May–May |
| Massachusetts | 184 | May | Apr–May |
| New York | 159 | May | May–May |
| Minnesota | 134 | May | May–Jun |
| Michigan | 69 | May | May–May |
| Wisconsin | 61 | May | May–May |
| Pennsylvania | 46 | May | Apr–May |
| Alaska | 29 | May | May–Jun |
| Connecticut | 19 | April | Apr–May |
| West Virginia | 12 | May | May–May |
| Rhode Island | 5 | May | May–May |
Main season = months with at least 30% of the state's peak-month count.
Related wildflowers (buttercup family)
Lesser Celandine
Red Columbine
Western Columbine
Rue Anemone
Marsh Marigold
Wood Anemone
Blue Columbine
Tenpetal Anemone
Photography tips
- Photograph flowers on calm, overcast mornings to avoid wind blur and harsh shadows.
- Get low: a shallow depth of field (f/2.8–f/5.6) isolates a bloom against soft color.
- Stay on trails — trampling meadows kills plants and ruins next year's display.
- Try a kaleidoscope abstract of a single bloom with our online kaleidoscope tool.
FAQ
When is the best time to photograph Threeleaf Goldthread?
Nationally, May has the most observations, with the main season from May to May.
Where is Threeleaf Goldthread most often seen?
The most observations come from Vermont, Maine, New Hampshire.