
Mountain Woodsorrel (Oxalis montana) is in the Woodsorrel Family family (Oxalidaceae). Across the U.S., iNaturalist users have logged 1,314 research-grade flowering observations of it in our sample, peaking in June.
Nationally it blooms mainly from June to July, but timing varies a lot by state and elevation — see the table below.
When to photograph Mountain Woodsorrel: observations by month (U.S.)
About Mountain Woodsorrel
Oxalis montana is a species of flowering plant in the Oxalidaceae family known by the common names mountain woodsorrel, wood shamrock, sours and white woodsorrel. It may also be called common woodsorrel, though this name also applies to its close relative, Oxalis acetosella.From Wikipedia via iNaturalist — article, CC BY-SA.
Mountain Woodsorrel by state
| State | Observations | Peak month | Main season |
|---|---|---|---|
| Vermont | 458 | June | Jun–Jul |
| New Hampshire | 210 | June | Jun–Jul |
| Maine | 165 | June | Jun–Jul |
| North Carolina | 147 | June | Jun–Jul |
| New York | 95 | June | Jun–Jul |
| Pennsylvania | 61 | June | Jun–Jun |
| Massachusetts | 57 | June | Jun–Jun |
| Tennessee | 49 | June | Apr–Jul |
| West Virginia | 25 | June | Jun–Jun |
| Michigan | 13 | July | Jun–Jul |
| Wisconsin | 13 | June | Jun–Jul |
| Virginia | 11 | June | Jun–Jul |
| Maryland | 5 | June | Jun–Jun |
Main season = months with at least 30% of the state's peak-month count.
Related wildflowers (Woodsorrel Family)

Bermuda buttercup

Violet Woodsorrel

Redwood Sorrel
Upright Yellow Woodsorrel

Largeflower pink-sorrel

Oregon woodsorrel
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 Mountain Woodsorrel?
Nationally, June has the most observations, with the main season from June to July.
Where is Mountain Woodsorrel most often seen?
The most observations come from Vermont, New Hampshire, Maine.