Trending: common blue violet (Viola sororia) — 1949 observations this week
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Phenology
The common blue violet blooming in your lawn or garden right now is feeding fritillary butterfly caterpillars — it's the only plant many of them can eat, making your yard a critical wildlife nursery if you let a few violets grow.
Common blue violet is having its moment in the spotlight this spring, with almost 2,000 people submitting verified photos to iNaturalist in just one week. This little purple wildflower is incredibly common across eastern and central North America, popping up in lawns, woods, and roadsides. The flood of observations helps scientists track exactly when and where it blooms each year, building a clearer picture of how spring is shifting over time.
Key Findings
1,949 research-grade observations were submitted in a single week, placing common blue violet among the top observed plant species on iNaturalist during that period.
The spike corresponds with peak spring bloom timing for Viola sororia across its native range in North America.
Research-grade status means each observation was verified by at least two independent identifiers, ensuring high data quality for ecological tracking.
chevron_right Technical Summary
Common blue violet is one of the most-observed plants on iNaturalist this week, with nearly 2,000 research-grade sightings logged across North America. This spring surge reflects both the plant's peak bloom season and growing public engagement with citizen science.
Abstract Preview
common blue violet is among the most observed plant species this week with 1949 research-grade observations.
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Species Mentioned
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Viola sororia, known commonly as the common blue violet, is a short-stemmed herbaceous perennial plant native to eastern North America. It is known by a number of common names, including common meadow violet, purple violet, woolly blue violet, hooded violet, and wood violet.