Yarrow's 1,100 sightings this week mark peak pollinator season
iNaturalist Community
Native Plants
Yarrow blooming in your yard or along roadsides right now is a reliable signal that summer pollinator season is at full peak, and its flat-topped flower clusters are one of the easiest entry points for learning to identify native beneficial insects visiting your garden.
Common yarrow is having a big moment: more than 1,100 people across the country spotted and logged it this week alone. It's a tough, feathery-leaved wildflower that pops up in meadows, lawns, and roadsides through summer, and it's beloved by bees, wasps, and butterflies. That many eyes on one plant in a single week is a snapshot of just how widespread and noticeable yarrow gets during its peak bloom.
Key Findings
1,122 research-grade observations of common yarrow were submitted to iNaturalist in a single week.
Yarrow ranked among the most-observed plant species platform-wide during this period, reflecting peak mid-summer bloom across its North American range.
All observations met iNaturalist's research-grade threshold, meaning each was confirmed by multiple independent identifiers.
chevron_right Technical Summary
Common yarrow is one of the most-observed plants in North America this week, with over 1,100 research-grade citizen-science sightings logged on iNaturalist. The surge reflects peak summer bloom timing and widespread naturalist engagement with this native wildflower.
Abstract Preview
Original paper
Trending: common yarrow (Achillea millefolium) — 1122 observations this week
common yarrow is among the most observed plant species this week with 1122 research-grade observations.
open_in_new Read full abstractAbstract copyright held by the original publisher.
Species Mentioned
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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.