Late Boneset (Eupatorium serotinum) is in the Sunflowers, Daisies, Asters, and Allies family (Asteraceae). Across the U.S., iNaturalist users have logged 2,492 research-grade flowering observations of it in our sample, peaking in September.
Nationally it blooms mainly from August to October, but timing varies a lot by state and elevation — see the table below.
When to photograph Late Boneset: observations by month (U.S.)
About Late Boneset
Eupatorium serotinum, also known as late boneset or late thoroughwort, is a fall-blooming herbaceous plant native to North America.From Wikipedia via iNaturalist — article, CC BY-SA.
Late Boneset by state
| State | Observations | Peak month | Main season |
|---|---|---|---|
| Texas | 480 | September | Aug–Oct |
| Mississippi | 209 | September | Sep–Oct |
| Maryland | 208 | September | Aug–Oct |
| New Jersey | 168 | September | Sep–Oct |
| Pennsylvania | 168 | September | Aug–Oct |
| Ohio | 144 | September | Sep–Sep |
| Kentucky | 126 | September | Aug–Sep |
| Virginia | 122 | September | Sep–Oct |
| Georgia | 101 | September | Aug–Oct |
| Arkansas | 95 | September | Aug–Oct |
| Alabama | 85 | September | Sep–Oct |
| New York | 83 | September | Sep–Oct |
| Illinois | 79 | September | Aug–Sep |
| North Carolina | 65 | September | Aug–Sep |
| Louisiana | 61 | September | Sep–Oct |
| Indiana | 53 | September | Aug–Oct |
| Missouri | 42 | September | Aug–Sep |
| Oklahoma | 40 | September | Sep–Sep |
| Florida | 36 | August | Jul–Sep |
| Tennessee | 25 | September | Aug–Oct |
| Delaware | 21 | September | Sep–Sep |
| District of Columbia | 21 | September | Sep–Sep |
| Iowa | 14 | August | Aug–Oct |
| South Carolina | 12 | September | Sep–Sep |
| West Virginia | 12 | September | Sep–Sep |
| Michigan | 6 | September | Sep–Sep |
| Kansas | 5 | September | Aug–Sep |
Main season = months with at least 30% of the state's peak-month count.
Related wildflowers (Sunflowers, Daisies, Asters, and Allies)
black-eyed Susan
Common Yarrow
White Snakeroot
Chicory
Lawn daisy
Philadelphia fleabane
Pearly Everlasting
Blue Mistflower
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 Late Boneset?
Nationally, September has the most observations, with the main season from August to October.
Where is Late Boneset most often seen?
The most observations come from Texas, Mississippi, Maryland.