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Invasive Plants


exotic, non-native, alien, noxious, or non-indigenous, invasive


Plants that become invasive have unique characteristics that give them the ability to thrive and spread aggressively outside their natural ranges. 

Non-native plants often spread because the insects, diseases, and foraging animals that naturally keep them in check in their native ranges are absent in their new locations. Invasive plants impact native plant and animal communities by displacing native vegetation and disrupting habitats as they become established and spread over time. Disturbed or abandonned lands provide easy places for invasive plants to become established.


Salem Sound Coastwatch, partnering with local land trusts, park and recreation departments and conservation commissions, works to tackle the invasive plant problem within the Salem Sound watershed. Often groups will call us looking for a service day and we organize a plant removal project.


To learn more, there is a wealth of excellent online resources:


The United States National Arboretum


Cornell University Ecology and Management of Invasive Plants Program


Center for Invasive Species and Ecological Health


Invasive Plants of the Eastern United States: Identification and Control


Biological Control of Invasive Plants in the Eastern United States


Some of the bad plants in Salem Sound watershed.

Oriental bittersweet


Japanese knowtweed


Purple loosetrife




Don't think this is here yet but we should be on the lookout!

Mile-minute weed