Gardeners are spotting monarch-friendly milkweed everywhere this week
iNaturalist Community
Native Plants
If you've got a patch of common milkweed in your yard or spot its pink flower clusters on a walk, you're looking at the single most important plant for monarch caterpillars, which eat nothing else.
Common milkweed is peaking in visibility right now, with hundreds of people uploading verified photos of it to iNaturalist this week alone. That surge usually means the plant is in bloom, its clusters of dusty-pink flowers and sturdy pods making it easy to notice along roadsides, meadows, and gardens. Since monarch butterfly caterpillars can only eat milkweed leaves, every sighting also hints at where monarchs might be laying eggs nearby.
Key Findings
762 research-grade observations of common milkweed (Asclepias syriaca) were logged on iNaturalist in a single week
The species ranked among the most-observed plants on the platform during this period
High observation volume aligns with the plant's mid-summer bloom period across much of its native North American range
chevron_right Technical Summary
Common milkweed is having a big week on iNaturalist, with 762 people logging research-grade sightings, a sign that this monarch butterfly host plant is blooming and easy to spot right now across its range.
Abstract Preview
Original paper
Trending: common milkweed (Asclepias syriaca) — 762 observations this week
common milkweed is among the most observed plant species this week with 762 research-grade observations.
open_in_new Read full abstractAbstract copyright held by the original publisher.
Species Mentioned
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Asclepias syriaca, commonly called common milkweed, butterfly flower, silkweed, silky swallow-wort, and Virginia silkweed, is a species of flowering plant. It is native to southern Canada and much of the United States east of the Rocky Mountains, excluding the drier parts of the prairies. It is i...