Trending: common yarrow (Achillea millefolium) — 1271 observations this week
iNaturalist Community
Citizen Science
Yarrow blooming in roadside ditches and meadows right now is one of the best indicators that your local pollinator season is hitting full stride — and it's a plant you can tuck into any sunny, dry corner of your yard to feed beetles, wasps, and native bees all summer with almost zero effort.
Common yarrow is a flat-topped white wildflower that grows just about everywhere — roadsides, meadows, your neighbor's unmowed lawn. Right now it's blooming across the continent, and thousands of people are photographing and logging it on a nature-tracking app called iNaturalist. That surge of photos helps scientists understand where plants are thriving, how bloom times are shifting, and which areas still have healthy wild habitat.
Key Findings
1,271 research-grade observations were submitted to iNaturalist in a single week, making common yarrow one of the most observed plant species in that period.
The volume of research-grade sightings indicates yarrow is currently at or near peak bloom across its North American range.
Citizen-science observation spikes like this provide phenological data — tracking when and where plants bloom — that supports climate-change research and native plant conservation planning.
chevron_right Technical Summary
Common yarrow, a tough native wildflower found across North America, topped iNaturalist observation charts this week with over 1,200 research-grade sightings — a sign that it's peaking in bloom and catching the eyes of naturalists everywhere.
Abstract Preview
common yarrow is among the most observed plant species this week with 1271 research-grade observations.
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Achillea millefolium, commonly known as yarrow or common yarrow, is a flowering plant in the family Asteraceae. Growing to 1 metre tall, it is characterized by small whitish flowers, a tall stem of fernlike leaves, and a pungent odor.