This invasive purple wetland plant is blooming everywhere right now
iNaturalist Community
Invasive Species
If you live near a marsh, pond edge, or ditch, that tall spike of magenta flowers crowding out cattails and native sedges is purple loosestrife, and one plant can produce millions of seeds in a season.
Purple loosestrife is a tall plant with bright purple-pink flower spikes that looks pretty but is actually a serious problem in wetlands. It spreads incredibly fast, taking over the space native plants and wildlife depend on, and right now it's blooming across the country, which is why so many people are photographing and reporting it. If you spot it near water, it's worth logging the sighting or pulling it before it seeds.
Key Findings
743 research-grade observations of purple loosestrife were logged this week, making it one of the most-observed species on the platform
The spike aligns with the plant's peak summer bloom period, when its purple flower spikes are most visible and identifiable
High observation volume reflects both its widespread invasive presence in North American wetlands and growing citizen-science monitoring effort
chevron_right Technical Summary
Purple loosestrife, an aggressive invasive wetland plant, is spiking in citizen-science sightings this week with 743 verified observations, signaling it's actively flowering and spreading across wetlands right now.
Abstract Preview
Original paper
Trending: purple loosestrife (Lythrum salicaria) — 743 observations this week
purple loosestrife is among the most observed plant species this week with 743 research-grade observations.
open_in_new Read full abstractAbstract copyright held by the original publisher.
Species Mentioned
Was this useful?
Want to tell us more? (optional)
Thanks for the note!
Something went wrong — please try again.
Too many submissions. Try again in an hour.
Street trees cut heat deaths by 39 percent in European cities
Trees in your local park or street aren't just pretty — they are literally keeping people alive during heatwaves, and planting even a modest number of the ri...
Lythrum salicaria or purple-loosestrife is a flowering plant belonging to the family Lythraceae. It should not be confused with other plants sharing the name loosestrife that are members of the genus Lysimachia in the family Primulaceae. This herbaceous perennial plant is native to temperate regi...