
Blue Mistflower (Conoclinium coelestinum) is in the Sunflowers, Daisies, Asters, and Allies family (Asteraceae). Across the U.S., iNaturalist users have logged 5,372 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 Blue Mistflower: observations by month (U.S.)
About Blue Mistflower
Conoclinium coelestinum, the blue mistflower, is a North American species of herbaceous perennial flowering plant in the sunflower family. It was formerly classified in the genus Eupatorium, but phylogenetic analyses in the late 20th century research indicated that that genus should be split, and the species was reclassified in Conoclinium.From Wikipedia via iNaturalist — article, CC BY-SA.
Blue Mistflower by state
| State | Observations | Peak month | Main season |
|---|---|---|---|
| Kentucky | 678 | September | Aug–Sep |
| Mississippi | 652 | October | Sep–Oct |
| Ohio | 579 | September | Aug–Sep |
| Texas | 530 | October | Aug–Oct |
| Louisiana | 429 | October | Sep–Nov |
| Virginia | 265 | September | Aug–Oct |
| Alabama | 257 | September | Sep–Oct |
| Tennessee | 223 | September | Aug–Sep |
| North Carolina | 199 | September | Sep–Oct |
| Florida | 173 | October | Sep–Oct |
| Maryland | 164 | September | Aug–Sep |
| Georgia | 160 | September | Sep–Oct |
| Indiana | 148 | September | Aug–Sep |
| Pennsylvania | 135 | September | Aug–Sep |
| South Carolina | 111 | October | Sep–Oct |
| Arkansas | 107 | September | Sep–Oct |
| New Jersey | 93 | September | Aug–Oct |
| West Virginia | 90 | September | Aug–Sep |
| Illinois | 75 | September | Aug–Oct |
| Missouri | 72 | September | Aug–Sep |
| New York | 70 | September | Aug–Sep |
| Oklahoma | 43 | September | Sep–Oct |
| Delaware | 37 | September | Sep–Sep |
| District of Columbia | 23 | September | Jul–Oct |
| Massachusetts | 21 | September | Sep–Sep |
| Iowa | 13 | August | Aug–Sep |
| Connecticut | 8 | September | Sep–Oct |
| Michigan | 6 | September | Aug–Oct |
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

brown-eyed Susan
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 Blue Mistflower?
Nationally, September has the most observations, with the main season from August to October.
Where is Blue Mistflower most often seen?
The most observations come from Kentucky, Mississippi, Ohio.