Merrimack Targets Invasive Plants for Removal

Town Council adopts new management plan to address problem species like Japanese knotweed and autumn olive

Published on Mar. 2, 2026

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The Merrimack Town Council has unanimously adopted a new invasive plant management plan that targets problem species like Japanese knotweed, autumn olive, and oriental bittersweet. A temporary Invasive Species Committee will map hotspots, guide roadside and town-land control efforts, and share disposal tips for private landowners.

Why it matters

Invasive plant species can outcompete native plants, disrupt ecosystems, and cause significant damage to infrastructure and property. By taking a proactive approach to managing these problematic plants, Merrimack is working to protect the local environment and maintain the town's natural beauty.

The details

The new invasive plant management plan will involve several key steps. First, the temporary Invasive Species Committee will identify and map areas within Merrimack that are heavily infested with problem plants like Japanese knotweed, autumn olive, and oriental bittersweet. The committee will then coordinate control efforts on town-owned lands and roadsides, while also providing guidance and resources to private landowners on how to properly identify and dispose of these invasive species.

  • The Merrimack Town Council unanimously adopted the new invasive plant management plan in March 2026.

The players

Merrimack Town Council

The governing body of the town of Merrimack, New Hampshire, which unanimously adopted the new invasive plant management plan.

Invasive Species Committee

A temporary committee formed to implement the new invasive plant management plan, including mapping hotspots, coordinating control efforts, and providing guidance to private landowners.

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What’s next

Details on the invasive plant management plan, including maps of targeted areas and disposal tips for private landowners, will be made available on the town of Merrimack's website.

The takeaway

Merrimack's proactive approach to managing invasive plant species demonstrates the town's commitment to preserving its natural environment and preventing further damage to local ecosystems and infrastructure. By working collaboratively with the community, the town aims to effectively address this growing problem.