Park50 species
Connecticut, US
Capen-Clark Historic District
You might spot American Robin, Eastern Poison Ivy, and Duck.
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Where to see Japanese knotweed in Connecticut
We found 15 places featuring Japanese knotweed in Connecticut. Plan your next visit below.
Park1 sightings50 species
Connecticut, US
Connecticut College Arboretum
You might spot Common Mugwort and Canada Goose.
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Park50 species
Connecticut, US
Dayville Historic District
You might spot Hay-Scented Fern, Canada Mayflower, and Wood Frog.
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Park1 sightings50 species
Connecticut, US
Glastonbury Historic District
You might spot Garlic Mustard and Common Eastern Bumble Bee.
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Park50 species
Connecticut, US
Hempstead Historic District
You might spot Common Mugwort, Canada Goose, and American Herring Gull.
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Park50 species
Connecticut, US
Riverton Historic District
You might spot Hobblebush, Pink Lady's Slipper, and Red Trillium.
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Park1 sightings12 species
Connecticut, US
Cheney Brothers Historic District
You might spot Garlic Mustard, Striped Wintergreen, and Mountain Laurel.
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Park1 sightings12 species
Connecticut, US
Coltsville Historic District
You might spot American Robin and Common Eastern Bumble Bee.
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Park12 species
Connecticut, US
Downtown Waterbury Historic District
You might spot Eastern Gray Squirrel and Japanese Barberry.
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Park1 sightings12 species
Connecticut, US
Hartford Golf Club Historic District
You might spot Common Eastern Bumble Bee and Red-Tailed Hawk.
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Park1 sightings12 species
Connecticut, US
Little Hollywood Historic District
You might spot American Robin and Common Eastern Bumble Bee.
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Park4 sightings12 species
Connecticut, US
Marion
You might spot Blue Jay, Bobcat, and Common Mugwort.
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Park1 sightings12 species
Connecticut, US
Mohegan State Forest
You might spot American Wintergreen and Pink Lady's Slipper.
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Park12 species
Connecticut, US
Overlook Historic District
You might spot Eastern Gray Squirrel and Japanese Barberry.
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Park4 sightings12 species
Connecticut, US
Southington Center Historic District
You might spot American Robin, Monarch, and American Pokeweed.
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Take the discovery with you
Looking for Japanese knotweed in Connecticut?
Take Snappit along to identify what you spot and add each discovery to your collection.
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Japanese knotweed
Common · Plants
Map of Japanese knotweed sightings in Connecticut
Explore clustered snap locations for this species in Connecticut.
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Recent snaps of Japanese knotweed in Connecticut
May 30, 2026
Hartford Golf Club Historic Districti
Photo attribution
(c) Sheila S, some rights reserved (CC BY)
License: CC BY 4.0 ↗
Image may be shown cropped inside the card frame.