White snakeroot is blooming across U.S. woodlands and drawing steady attention
iNaturalist Community
Native Plants
The frothy white flowers lighting up your shady woodland edges this week are white snakeroot, a late-season native that feeds pollinators when little else is in bloom, and it's also toxic to livestock, so it's worth knowing on sight.
White snakeroot is a native wildflower with fluffy white flower clusters, and people posted 1628 photos of it on iNaturalist in the past week. That's almost identical to the week before, so the plant is holding steady at the top of the charts. It blooms in late summer and fall, which is why so many people are noticing it now.
Key Findings
1628 US observations of white snakeroot were logged on iNaturalist in the past 7 days
That is down 5 from 1633 in the prior 7 days, a nearly flat trend
It ranks among the most-observed plants in the United States this week
chevron_right Technical Summary
White snakeroot is one of the most-photographed wild plants in the U.S. right now, with 1628 iNaturalist sightings in the past week. Late September is peak bloom, so its fuzzy white flower clusters are showing up in woods and along trails everywhere.
Abstract Preview
Original paper
Trending: white snakeroot (Ageratina altissima) — 1628 observations this week
White snakeroot (Ageratina altissima) is a species in the family Asteraceae. iNaturalist users recorded 1628 observations of it in the United States in the 7 days before today, among the most for a...
open_in_new Read full abstractAbstract copyright held by the original publisher.
Species Mentioned
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Photo by Ira Gershenhorn, taken in New York, United States. CC0 via iNaturalist.
Pollinators are animals—such as bees, butterflies, birds, and other insects—that transfer pollen from a flower's anther to its stigma, enabling fertilization and seed production. This process underpins plant reproductive success and genetic diversity, making pollinator research essential for
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