Whorled Milkweed (Asclepias verticillata) is in the Dogbane Family family (Apocynaceae). Across the U.S., iNaturalist users have logged 1,689 research-grade flowering observations of it in our sample, peaking in July.
Nationally it blooms mainly from June to August, but timing varies a lot by state and elevation — see the table below.
When to photograph Whorled Milkweed: observations by month (U.S.)
About Whorled Milkweed
Asclepias verticillata (whorled milkweed, eastern whorled milkweed, horsetail milkweed) is a species of milkweed native to most all of eastern North America and parts of western Canada and the United States.From Wikipedia via iNaturalist — article, CC BY-SA.
Whorled Milkweed by state
| State | Observations | Peak month | Main season |
|---|---|---|---|
| Illinois | 184 | July | Jul–Aug |
| Ohio | 157 | July | Jul–Aug |
| Minnesota | 151 | July | Jul–Aug |
| Wisconsin | 137 | July | Jul–Aug |
| Georgia | 130 | August | Jun–Aug |
| Pennsylvania | 121 | July | Jul–Aug |
| North Carolina | 119 | August | Jun–Aug |
| Texas | 117 | May | May–Jun |
| Florida | 108 | August | Apr–Aug |
| Maryland | 107 | August | Jul–Aug |
| Iowa | 46 | July | Jul–Aug |
| Indiana | 42 | July | Jul–Aug |
| Arkansas | 38 | June | Jun–Jul |
| Missouri | 30 | July | Jun–Aug |
| Alabama | 25 | July | Jun–Aug |
| Mississippi | 25 | June | Jun–Jul |
| Kentucky | 20 | June | Jun–Jul |
| Tennessee | 20 | August | Jun–Aug |
| Nebraska | 19 | July | Jul–Aug |
| North Dakota | 17 | July | Jul–Aug |
| Oklahoma | 17 | June | May–Jun |
| Kansas | 9 | June | Jun–Jun |
| Michigan | 9 | August | Jul–Sep |
| Virginia | 8 | July | Jul–Aug |
| South Dakota | 6 | July | Jul–Jul |
| New York | 5 | July | Jul–Aug |
Main season = months with at least 30% of the state's peak-month count.
Related wildflowers (Dogbane Family)
Butterfly Milkweed
Common Milkweed
Lesser Periwinkle
Swamp Milkweed
Showy Milkweed
Green Antelopehorns
Narrowleaf Milkweed
Spreading Dogbane
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 Whorled Milkweed?
Nationally, July has the most observations, with the main season from June to August.
Where is Whorled Milkweed most often seen?
The most observations come from Illinois, Ohio, Minnesota.