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Where to see Japanese knotweed in New Hampshire

We found 3 places featuring Japanese knotweed in New Hampshire. Plan your next visit below.

Japanese knotweed
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Japanese knotweed

Common · Plants

Map of Japanese knotweed sightings in New Hampshire

Explore clustered snap locations for this species in New Hampshire.

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Derryfield Park place preview
🌿Park46 sightings50 species
🇺🇸

New Hampshire, US

Derryfield Park

Hiking, Family Friendly, Wildlife Watching, Birdwatching, Historical Site, Playground, Sports Facilities, Dog Friendly, Cross Country Running, Wheelchair Accessible

You might spot Eastern White Pine, Eastern Skunk Cabbage, and Duck.

View full guide →

Wilder place preview
🌿Park41 sightings50 species
🇺🇸

New Hampshire, US

Wilder

Architectural Sightseeing and Connecticut River.

You might spot Eastern White Pine, Eastern Hemlock, and American Beech.

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Franklin Falls Historic District place preview
🌿Park30 sightings12 species
🇺🇸

New Hampshire, US

Franklin Falls Historic District

Architecture and Cultural Sites.

You might spot Monarch, Eastern White Pine, and Pink Lady's Slipper.

View full guide →

Recent snaps of Japanese knotweed in New Hampshire

Japanese knotweed
deciduous trait badgeflowering trait badgeinvasive trait badgemedicinal trait badge
Japanese knotweed

May 8, 2026

Franklin Falls Historic District

Open source (iNaturalist) ↗

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