Trending: red trillium (Trillium erectum) — 421 observations this week
iNaturalist Community
Phenology
Red trillium blooming in your local woodland right now is one of the clearest signals that spring has fully arrived — and tracking it year over year helps reveal whether climate change is shifting the timing of your favorite forest walks.
Red trillium is a striking three-petaled wildflower that pops up in shady forests each spring, and this week hundreds of people photographed and reported it across North America. When lots of people log observations at the same time, scientists can use that data to understand where the plant is thriving and whether its bloom timing is shifting. It's a beautiful example of everyday nature lovers contributing real data to plant science.
Key Findings
421 research-grade observations of red trillium were recorded in a single week on iNaturalist
Observation volume places red trillium among the most-watched plant species this week, indicating peak spring bloom activity
Research-grade status means photos were verified by multiple community identifiers, ensuring data quality for scientific use
chevron_right Technical Summary
Red trillium is having a standout week on iNaturalist, with 421 research-grade observations logged across its range. This spring wildflower is capturing widespread attention from naturalists and citizen scientists during its peak bloom season.
Abstract Preview
red trillium is among the most observed plant species this week with 421 research-grade observations.
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Species Mentioned
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Trillium erectum, the red trillium, also known as wake robin, purple trillium, bethroot, or stinking benjamin, is a species of flowering plant in the family Melanthiaceae. The plant takes its common name "wake robin" by analogy with the European robin, which has a red breast heralding spring. Lik...