Trending: large white trillium (Trillium grandiflorum) — 766 observations this week
iNaturalist Community
Phenology
If you walk any eastern hardwood forest this week, you're in the middle of peak trillium season — and every photo you submit to iNaturalist helps researchers track how spring bloom timing is shifting with climate change.
Large white trillium is a striking three-petaled white wildflower that blooms each spring in the shaded forests of eastern North America. This week, hundreds of nature lovers spotted and photographed it, making it one of the most-watched plants on the popular nature app iNaturalist. These crowd-sourced sightings build a living map of where and when trilliums bloom — data that scientists use to understand how spring is changing year by year.
Key Findings
766 research-grade observations of large white trillium were recorded in a single week on iNaturalist
Large white trillium ranked among the most observed plant species site-wide this week, indicating peak bloom conditions across its range
All observations met iNaturalist's 'research grade' threshold, meaning they were confirmed by multiple community identifiers and are usable in scientific datasets
chevron_right Technical Summary
Large white trillium is having a standout week on iNaturalist, with 766 research-grade observations logged by citizen scientists — a sign that this beloved woodland wildflower is blooming across eastern North America right now.
Abstract Preview
large white trillium is among the most observed plant species this week with 766 research-grade observations.
open_in_new Read full abstractAbstract copyright held by the original publisher.
Species Mentioned
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Trillium grandiflorum, the white trillium, large-flowered trillium, great white trillium, white wake-robin or French: trille blanc, is a species of flowering plant in the family Melanthiaceae. A monocotyledonous, herbaceous perennial, the plant is native to eastern North America, from northern Qu...