Trailing Blackberry (Rubus ursinus) is in the rose family family (Rosaceae). Across the U.S., iNaturalist users have logged 3,684 research-grade flowering observations of it in our sample, peaking in April.
Nationally it blooms mainly from March to May, but timing varies a lot by state and elevation — see the table below.
When to photograph Trailing Blackberry: observations by month (U.S.)
About Trailing Blackberry
Rubus ursinus is a North American species of blackberry or dewberry, known by the common names California blackberry, California dewberry, Douglas berry, Pacific blackberry, Pacific dewberry and trailing blackberry.From Wikipedia via iNaturalist — article, CC BY-SA.
Trailing Blackberry by state
| State | Observations | Peak month | Main season |
|---|---|---|---|
| California | 2,719 | April | Mar–May |
| Washington | 549 | May | Apr–May |
| Oregon | 415 | May | Apr–May |
Main season = months with at least 30% of the state's peak-month count.
Related wildflowers (rose family)
Multiflora Rose
Virginia strawberry
Southern Dewberry
Purple-Flowered Raspberry
Thimbleberry
Salmonberry
Mock Strawberry
Osoberry
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 Trailing Blackberry?
Nationally, April has the most observations, with the main season from March to May.
Where is Trailing Blackberry most often seen?
The most observations come from California, Washington, Oregon.