Blue Phlox (Phlox divaricata) is in the phlox family family (Polemoniaceae). Across the U.S., iNaturalist users have logged 4,315 research-grade flowering observations of it in our sample, peaking in April.
Nationally it blooms mainly from April to May, but timing varies a lot by state and elevation — see the table below.
When to photograph Blue Phlox: observations by month (U.S.)
About Blue Phlox
Phlox divaricata, the wild blue phlox, woodland phlox, or wild sweet william, is a species of flowering plant in the family Polemoniaceae, native to forests and fields in eastern North America.From Wikipedia via iNaturalist — article, CC BY-SA.
Blue Phlox by state
| State | Observations | Peak month | Main season |
|---|---|---|---|
| Ohio | 881 | April | Apr–May |
| Kentucky | 824 | April | Apr–Apr |
| Illinois | 445 | April | Apr–May |
| Pennsylvania | 347 | April | Apr–May |
| Indiana | 303 | April | Apr–May |
| Minnesota | 201 | May | May–May |
| Missouri | 146 | April | Apr–Apr |
| Virginia | 136 | April | Apr–Apr |
| Tennessee | 134 | April | Mar–Apr |
| West Virginia | 114 | April | Apr–Apr |
| Wisconsin | 112 | May | May–May |
| Iowa | 103 | May | Apr–May |
| Maryland | 95 | April | Apr–Apr |
| Michigan | 85 | May | May–May |
| Alabama | 75 | March | Mar–Apr |
| Mississippi | 72 | March | Mar–Apr |
| New York | 59 | May | Apr–May |
| Arkansas | 50 | April | Mar–Apr |
| Kansas | 35 | April | Apr–Apr |
| Georgia | 27 | March | Mar–Apr |
| North Carolina | 20 | April | Mar–Apr |
| Oklahoma | 12 | March | Mar–Apr |
| Delaware | 10 | April | Apr–Apr |
| Nebraska | 9 | May | Apr–May |
| New Jersey | 7 | April | Apr–May |
Main season = months with at least 30% of the state's peak-month count.
Related wildflowers (phlox family)
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 Phlox?
Nationally, April has the most observations, with the main season from April to May.
Where is Blue Phlox most often seen?
The most observations come from Ohio, Kentucky, Illinois.