Search
tag

wildlife-gardening

1 article
Trending: common milkweed (Asclepias syriaca) — 2095 observations this week

iNaturalist · 2026-06-28

Common milkweed is surging in citizen-science observations this week, with nearly 2,100 research-grade sightings logged on iNaturalist — a signal that the plant is in peak bloom or active growth across North America and that observers are paying close attention.

1

2,095 research-grade observations of common milkweed were submitted to iNaturalist in a single week, placing it among the most observed plant species.

2

The spike in sightings likely corresponds to peak bloom or active foliar growth, making this a key phenological window for monarch butterfly activity.

3

Citizen-science data at this volume creates a near real-time distribution map useful for tracking milkweed availability along monarch migration corridors.

mail Weekly plant science — one email, Saturdays.