Purple Loosestrife
Lythrum salicaria
Why is it a problem?
Purple Loosestrife originated in Europe and Asia. It was first introduced to Northern America in the 1800's. It thrives in wetlands and along roadsides forming monocultures that outcompete native species. This leaves our pollinators, birds and other animals without a reliable food source. Purple loosestrife can rapidly reproduce and establish itself, disrupting the habitat of our native aquatic life.
How to identify?
Purple loosestrife can grow anywhere from 4 feet to 10 feet tall with a square woody stem. The leaves are lance shaped and have a whorl or opposite leaf structure. The plant produces vibrant magenta flowers, each with 5 to 7 petals, which bloom from summer through early autumn.
How do I manage it?
Purple loosestrife can establish itself quickly. Monitoring existing patches and watching for any new growth is crucial. Smaller populations of purple loosestrife can be removed mechanically. Annual consistency of removing new growth can help to eradicate purple loosestrife.
