Ezina · A field manual for plant care · United StatesVol. I · Ed. 2027 · Proof copy

Vermont invasive plants

Vermont (VT) regulates 39 invasive plants under Vt. Quarantine #3 - Noxious Weeds; Code Vt. R. 20-031-021. Vermont's list is a trade restriction, which governs what may be sold, propagated, or moved within the state — in plain terms, which plants are illegal to sell here.

Vermont invasive species list

Vermont restricts 39 plants, including Purple Loosestrife, Waterthyme and Eurasian Watermilfoil. Plants marked Prohibited may not be sold, propagated, or moved within Vermont. 31 of the 39 are also flagged invasive by GRIIS, which is an ecological finding rather than a ruling by Vermont. Checked against Vt. Quarantine #3 - Noxious Weeds; Code Vt. R. 20-031-021 on July 20, 2026.

Amur Honeysuckle – Lonicera maackii Not recorded hereInvasive

Amur Honeysuckle (Lonicera maackii)
Photo by Herman, D.E., et al / Public domain / ND State Soil Conservation Committee / via USDA PLANTS

Invasive in the US, and recorded in no Vermont county. Vermont lists Amur Honeysuckle under “Class B.”

Amur Maple – Acer ginnala IntroducedProhibited

Amur Maple (Acer ginnala)
Photo by Herman, D.E., et al / Public domain / ND State Soil Conservation Committee / via USDA PLANTS

Recorded in 1 of Vermont’s 14 counties. Vermont lists Amur Maple under “Class B.”

Bishop's Goutweed – Aegopodium podagraria IntroducedInvasive

Bishop's Goutweed (Aegopodium podagraria)
Photo by Britton, N.L., and A. Brown / Public domain / Kentucky Native Plant Society / via USDA PLANTS

Invasive in the US, and recorded in 6 of Vermont’s 14 counties. Vermont lists Bishop's Goutweed under “Class B.”

Brazilian Waterweed – Egeria densa IntroducedInvasive

Brazilian Waterweed (Egeria densa)
Photo by Lara Gudmundsdottir / CC BY-SA 4.0 / Wikimedia Commons

Invasive in the US, and recorded in 1 of Vermont’s 14 counties. Vermont lists Brazilian Waterweed under “Class A.”

Brittle Waternymph – Najas minor IntroducedInvasive

Brittle Waternymph (Najas minor)
Photo by Robert H. Molenbrock / Public domain / Wikimedia Commons

Invasive in the US, and recorded in 1 of Vermont’s 14 counties. Vermont lists Brittle Waternymph under “Class B.”

Burning Bush – Euonymus alatus IntroducedInvasive

Burning Bush (Euonymus alatus)
Photo by Chris Barton/Gif absarnt / CC BY-SA 3.0 / Wikimedia Commons

Invasive in the US, and recorded in 1 of Vermont’s 14 counties. Vermont lists Burning Bush under “Class B.”

Carolina Fanwort – Cabomba caroliniana Not recorded hereProhibited

Carolina Fanwort (Cabomba caroliniana)
Photo by Leslie J. Mehrhoff, University of Connecticut, Bugwood.org / CC BY 3.0 / Wikimedia Commons

Recorded in no Vermont county. Vermont lists Carolina Fanwort under “Class A.”

Common Barberry – Berberis vulgaris IntroducedInvasive

Common Barberry (Berberis vulgaris)
Photo by Unknown photographer / Public domain / Wikimedia Commons

Invasive in the US, and recorded in 8 of Vermont’s 14 counties. Vermont lists Common Barberry under “Class B.”

Common Buckthorn – Rhamnus cathartica IntroducedInvasive

Common Buckthorn (Rhamnus cathartica)
Photo by Köhler, F. E. (Franz Eugen) / Public domain / Wikimedia Commons

Invasive in the US, and recorded in 8 of Vermont’s 14 counties. Vermont lists Common Buckthorn under “Class B.”

Common Frogbit – Hydrocharis morsus-ranae Not recorded hereInvasive

Common Frogbit (Hydrocharis morsus-ranae)
Photo by Christian Fischer / CC BY-SA 3.0 / Wikimedia Commons

Invasive in the US, and recorded in no Vermont county. Vermont lists Common Frogbit under “Class B.”

Common Reed – Phragmites australis NativeProhibited

Common Reed (Phragmites australis)
Photo by Howard, R.A / Public domain / Smithsonian Institution, Richard A. Howard Photograph Collection / via USDA PLANTS

Recorded in 8 of Vermont’s 14 counties. Vermont lists Common Reed under “Class B.”

Curly Pondweed – Potamogeton crispus IntroducedInvasive

Curly Pondweed (Potamogeton crispus)
Photo by Unknown photographer / CC BY-SA 3.0 / Wikimedia Commons

Invasive in the US, and recorded in 4 of Vermont’s 14 counties. Vermont lists Curly Pondweed under “Class B.”

Eared Watermoss – Salvinia auriculata Not recorded hereProhibited

Eared Watermoss (Salvinia auriculata)
Photo by Mateus Hidalgo / CC BY-SA 2.5 br / Wikimedia Commons

Recorded in no Vermont county. Vermont lists Eared Watermoss under “Class A.”

Eurasian Watermilfoil – Myriophyllum spicatum Not recorded hereInvasive

Eurasian Watermilfoil (Myriophyllum spicatum)
CC BY-SA 3.0 / Wikimedia Commons

Invasive in the US, and recorded in no Vermont county. Vermont lists Eurasian Watermilfoil under “Class B.”

Flowering Rush – Butomus umbellatus IntroducedInvasive

Flowering Rush (Butomus umbellatus)
Photo by Howard, R.A / Public domain / Smithsonian Institution, Richard A. Howard Photograph Collection / via USDA PLANTS

Invasive in the US, and recorded in 5 of Vermont’s 14 counties. Vermont lists Flowering Rush under “Class B.”

Garlic Mustard – Alliaria petiolata IntroducedInvasive

Garlic Mustard (Alliaria petiolata)
Photo by O. Pichard / CC BY-SA 3.0 / Wikimedia Commons

Invasive in the US, and recorded in 2 of Vermont’s 14 counties. Vermont lists Garlic Mustard under “Class B.”

Giant Salvinia – Salvinia biloba Not recorded hereProhibited

Giant Salvinia (Salvinia biloba)
Photo by no rights reserved / CC0 / iNaturalist

Recorded in no Vermont county. Vermont lists Giant Salvinia under “Class A.”

Giant Salvinia – Salvinia herzogii Not recorded hereProhibited

Recorded in no Vermont county. Vermont lists Giant Salvinia under “Class A.”

Glossy Buckthorn – Frangula alnus IntroducedInvasive

Glossy Buckthorn (Frangula alnus)
Photo by Sten Porse / CC BY-SA 3.0 / Wikimedia Commons

Invasive in the US, and recorded in 4 of Vermont’s 14 counties. Vermont lists Glossy Buckthorn under “Class B.”

Indian Swampweed – Hygrophila polysperma Not recorded hereInvasive

Indian Swampweed (Hygrophila polysperma)
CC BY-SA 3.0 / Wikimedia Commons

Invasive in the US, and recorded in no Vermont county. Vermont lists Indian Swampweed under “Class A.”

Japanese Barberry – Berberis thunbergii IntroducedInvasive

Japanese Barberry (Berberis thunbergii)
Photo by Howard, R.A / Public domain / Smithsonian Institution, Richard A. Howard Photograph Collection / via USDA PLANTS

Invasive in the US, and recorded in 5 of Vermont’s 14 counties. Vermont lists Japanese Barberry under “Class B.”

Japanese Knotweed – Fallopia japonica (potentially invasive weed) IntroducedInvasive

Japanese Knotweed (Fallopia japonica (potentially invasive weed))
Photo by Elaine Haug / CC0 / Smithsonian Open Access / via USDA PLANTS

Invasive in the US, and recorded in 6 of Vermont’s 14 counties. Vermont lists Japanese Knotweed under “Class B.”

Kariba-Weed – Salvinia molesta Not recorded hereInvasive

Kariba-Weed (Salvinia molesta)
Photo by No machine-readable author provided. Marshman~commonswiki assumed (based on copyright claims). / CC BY 2.5 / Wikimedia Commons

Invasive in the US, and recorded in no Vermont county. Vermont lists Kariba-Weed under “Class A.”

Louise's Swallow-Wort – Cynanchum louiseae IntroducedInvasive

Louise's Swallow-Wort (Cynanchum louiseae)
Photo by Part of a work by Britton, N.L., and A. Brown / Public domain / Wikimedia Commons

Invasive in the US, and recorded in 3 of Vermont’s 14 counties. Vermont lists Louise's Swallow-Wort under “Class B.”

Morrow's Honeysuckle – Lonicera morrowii IntroducedInvasive

Morrow's Honeysuckle (Lonicera morrowii)
Photo by Easai at English Wikipedia / CC BY-SA 3.0 / Wikimedia Commons

Invasive in the US, and recorded in 7 of Vermont’s 14 counties. Vermont lists Morrow's Honeysuckle under “Class B.”

Norway Maple – Acer platanoides IntroducedInvasive

Norway Maple (Acer platanoides)
Photo by Martin Bobka (= Martin120) / CC BY-SA 2.5 / Wikimedia Commons

Invasive in the US, and recorded in 1 of Vermont’s 14 counties. Vermont lists Norway Maple under “Class B.”

Oriental Bittersweet – Celastrus orbiculatus IntroducedInvasive

Oriental Bittersweet (Celastrus orbiculatus)
Photo by Unknown photographer / Public domain / Wikimedia Commons

Invasive in the US, and recorded in 1 of Vermont’s 14 counties. Vermont lists Oriental Bittersweet under “Class B.”

Paleyellow Iris – Iris pseudacorus IntroducedInvasive

Paleyellow Iris (Iris pseudacorus)
Photo by Howard, R.A / Public domain / Smithsonian Institution, Richard A. Howard Photograph Collection / via USDA PLANTS

Invasive in the US, and recorded in 4 of Vermont’s 14 counties. Vermont lists Paleyellow Iris under “Class B.”

Parrot Feather Watermilfoil – Myriophyllum aquaticum Not recorded hereInvasive

Parrot Feather Watermilfoil (Myriophyllum aquaticum)
Photo by Robert H. Mohlenbrock. USDA NRCS / Public domain / USDA NRCS Wetland Science Institute (WSI) / via USDA PLANTS

Invasive in the US, and recorded in no Vermont county. Vermont lists Parrot Feather Watermilfoil under “Class A.”

Purple Loosestrife – Lythrum salicaria IntroducedInvasive

Purple Loosestrife (Lythrum salicaria)
Photo by Ivar Leidus / CC BY-SA 3.0 / Wikimedia Commons

Invasive in the US, and recorded in 8 of Vermont’s 14 counties. Vermont lists Purple Loosestrife under “Class B.”

Purple-Leaf Japanese Honeysuckle – Lonicera japonica 'Purpurea' Not recorded hereInvasive

Purple-Leaf Japanese Honeysuckle (Lonicera japonica 'Purpurea')
Photo by W.R. Mattoon / Public domain / USDA Forest Service / via USDA PLANTS

Invasive in the US, and recorded in no Vermont county. Vermont lists Purple-Leaf Japanese Honeysuckle under “Class B.”

Showy Fly Honeysuckle – Lonicera x bella IntroducedInvasive

Showy Fly Honeysuckle (Lonicera x bella)
Photo by Leslie J. Mehrhoff, University of Connecticut, Bugwood.org / CC BY 3.0 us / Wikimedia Commons

Invasive in the US, and recorded in 7 of Vermont’s 14 counties. Vermont lists Showy Fly Honeysuckle under “Class B.”

Tatarian Honeysuckle – Lonicera tatarica IntroducedInvasive

Tatarian Honeysuckle (Lonicera tatarica)
Photo by dave_7 from Lethbridge, Canada / CC BY 2.0 / Wikimedia Commons

Invasive in the US, and recorded in 7 of Vermont’s 14 counties. Vermont lists Tatarian Honeysuckle under “Class B.”

Tree of Heaven – Ailanthus altissima Not recorded hereInvasive

Tree of Heaven (Ailanthus altissima)
Photo by USDA Forest Service / Public domain / USDA Forest Service / via USDA PLANTS

Invasive in the US, and recorded in no Vermont county. Vermont lists Tree of Heaven under “Class B.”

Twoleaf Watermilfoil – Myriophyllum heterophyllum Not recorded hereProhibited

Twoleaf Watermilfoil (Myriophyllum heterophyllum)
Photo by Robert H. Mohlenbrock. USDA NRCS / Public domain / USDA NRCS Wetland Science Institute (WSI) / via USDA PLANTS

Recorded in no Vermont county. Vermont lists Twoleaf Watermilfoil under “Class A.”

Water Chestnut – Trapa natans IntroducedInvasive

Water Chestnut (Trapa natans)
Photo by Krzysztof Ziarnek, Kenraiz / CC BY-SA 4.0 / Wikimedia Commons

Invasive in the US, and recorded in 1 of Vermont’s 14 counties. Vermont lists Water Chestnut under “Class B.”

Waterthyme – Hydrilla verticillata Not recorded hereInvasive

Waterthyme (Hydrilla verticillata)
Public domain / Wikimedia Commons

Invasive in the US, and recorded in no Vermont county. Vermont lists Waterthyme under “Class A.”

White Swallow-Wort – Cynanchum vincetoxicum Not recorded hereProhibited

White Swallow-Wort (Cynanchum vincetoxicum)
Photo by Stefan.lefnaer / CC BY-SA 3.0 / Wikimedia Commons

Recorded in no Vermont county. Vermont lists White Swallow-Wort under “Class A.”

Yellow Floatingheart – Nymphoides peltata IntroducedInvasive

Yellow Floatingheart (Nymphoides peltata)
Photo by G.A. Cooper / CC0 / Smithsonian Open Access / via USDA PLANTS

Invasive in the US, and recorded in 1 of Vermont’s 14 counties. Vermont lists Yellow Floatingheart under “Class B.”

2 of these plants are native to part of the United States, marked US native above. Nativity is regional. Black locust is native to the Appalachians and regulated in New England; Palmer amaranth is native to the Southwest and listed as an agricultural weed in the Corn Belt. A listing tells you what Vermont regulates, not where a plant belongs. The county checker answers the second question.

Want to check a plant by photo or county?

Use our “Is it native” tool for free.

Compiled from the rule itself, retrieved July 20, 2026. Law changes; if you spot a listing we have wrong or stale, tell us at support@getezina.com.

The same list as a table
Plant Scientific name Status Plant instead
Amur Honeysuckle Lonicera maackii ProhibitedInvasiveVermont says “Class B” Common Witch Hazel, Smooth Sumac, Shining Willow
Amur Maple Acer ginnala ProhibitedVermont says “Class B” —
Bishop's Goutweed Aegopodium podagraria ProhibitedInvasiveVermont says “Class B” Pipsissewa, Greater Creeping Spearwort, Nerveless Woodland Sedge
Brazilian Waterweed Egeria densa ProhibitedInvasiveVermont says “Class A” —
Brittle Waternymph Najas minor ProhibitedInvasiveVermont says “Class B” —
Burning Bush Euonymus alatus ProhibitedInvasiveVermont says “Class B” Russet Buffaloberry, Mapleleaf Viburnum, Steeplebush
Carolina Fanwort US native Cabomba caroliniana ProhibitedVermont says “Class A” —
Common Barberry Berberis vulgaris ProhibitedInvasiveVermont says “Class B” Common Juniper, Sandcherry, Russet Buffaloberry
Common Buckthorn Rhamnus cathartica ProhibitedInvasiveVermont says “Class B” Common Witch Hazel, Smooth Sumac, Shining Willow
Common Frogbit Hydrocharis morsus-ranae ProhibitedInvasiveVermont says “Class B” —
Common Reed Phragmites australis ProhibitedVermont says “Class B” —
Curly Pondweed Potamogeton crispus ProhibitedInvasiveVermont says “Class B” —
Eared Watermoss Salvinia auriculata ProhibitedVermont says “Class A” —
Eurasian Watermilfoil Myriophyllum spicatum ProhibitedInvasiveVermont says “Class B” —
Flowering Rush Butomus umbellatus ProhibitedInvasiveVermont says “Class B” —
Garlic Mustard Alliaria petiolata ProhibitedInvasiveVermont says “Class B” —
Giant Salvinia Salvinia biloba ProhibitedVermont says “Class A” —
Giant Salvinia Salvinia herzogii ProhibitedVermont says “Class A” —
Glossy Buckthorn Frangula alnus ProhibitedInvasiveVermont says “Class B” Shining Willow, Speckled Alder, Silky Dogwood
Indian Swampweed Hygrophila polysperma ProhibitedInvasiveVermont says “Class A” —
Japanese Barberry Berberis thunbergii ProhibitedInvasiveVermont says “Class B” White Meadowsweet, Mountain Laurel, Sweetgale
Japanese Knotweed Fallopia japonica (potentially invasive weed) ProhibitedInvasiveVermont says “Class B” —
Kariba-Weed Salvinia molesta ProhibitedInvasiveVermont says “Class A” —
Louise's Swallow-Wort Cynanchum louiseae ProhibitedInvasiveVermont says “Class B” —
Morrow's Honeysuckle Lonicera morrowii ProhibitedInvasiveVermont says “Class B” White Meadowsweet, Sandcherry, American Black Currant
Norway Maple Acer platanoides ProhibitedInvasiveVermont says “Class B” Red Maple, Sugar Maple, Box Elder
Oriental Bittersweet Celastrus orbiculatus ProhibitedInvasiveVermont says “Class B” American Bittersweet, Trumpet Honeysuckle, Summer Grape
Paleyellow Iris Iris pseudacorus ProhibitedInvasiveVermont says “Class B” Harlequin Blueflag, Pickerelweed, Pennsylvania Smartweed
Parrot Feather Watermilfoil Myriophyllum aquaticum ProhibitedInvasiveVermont says “Class A” —
Purple Loosestrife Lythrum salicaria ProhibitedInvasiveVermont says “Class B” Great St. Johnswort, Canada Goldenrod, Common Cowparsnip
Purple-Leaf Japanese Honeysuckle Lonicera japonica 'Purpurea' ProhibitedInvasiveVermont says “Class B” Trumpet Honeysuckle, Hairy Honeysuckle, Devil's Darning Needles
Showy Fly Honeysuckle Lonicera x bella ProhibitedInvasiveVermont says “Class B” White Meadowsweet, Sandcherry, American Black Currant
Tatarian Honeysuckle Lonicera tatarica ProhibitedInvasiveVermont says “Class B” American Fly Honeysuckle, Swamp Fly Honeysuckle, American Black Currant
Tree of Heaven Ailanthus altissima ProhibitedInvasiveVermont says “Class B” Black Cherry, Sweet Birch, Honey Locust
Twoleaf Watermilfoil US native Myriophyllum heterophyllum ProhibitedVermont says “Class A” —
Water Chestnut Trapa natans ProhibitedInvasiveVermont says “Class B” —
Waterthyme Hydrilla verticillata ProhibitedInvasiveVermont says “Class A” —
White Swallow-Wort Cynanchum vincetoxicum ProhibitedVermont says “Class A” —
Yellow Floatingheart Nymphoides peltata ProhibitedInvasiveVermont says “Class B” —

What the tags mean

Two separate findings. Invasive is ecological. The other three are legal statuses Vermont sets in statute, and which one applies turns on what the rule obliges, and of whom.

Invasive
An ecological finding, and a different question from the law. GRIIS — the Global Register of Introduced and Invasive Species — lists the plant as invasive in the lower 48 states. Most invasive plants carry no state listing at all and are sold freely, so a plant without this tag is not thereby safe, and a plant without a legal chip is not thereby harmless.
Prohibited
May not be sold, moved, propagated or possessed at all.
Restricted
May still be sold or held, but under conditions — retail signage, an identification tag, or a carve-out for sterile cultivars.
Listed
Designated, but the duty to control it falls on landowners rather than on the nursery trade.

Where this comes from

Vermont listings
Vt. Quarantine #3 - Noxious Weeds; Code Vt. R. 20-031-021. Read the rule.
Invasive status
GRIIS, the Global Register of Introduced and Invasive Species, via GBIF, covering the lower 48 states. A scientific register with no legal force; it is cited separately from the statute above because the two disagree far more often than they agree. Garden crops it flags only for spreading from cultivation are left out after review.
Status wording
The Prohibited / Restricted / Listed chips are Ezina’s normalisation across 44 states and are not the legal term. Where Vermont’s own word for a plant differs from the chip, it is quoted verbatim beneath it.
Nativity
USDA PLANTS county distribution layer, surfaced through the county checker.

Regulated next door, but not in Vermont

Plants that two or more states bordering Vermont regulate, and Vermont does not. A listing is a legal act rather than an ecological one, so a plant can be a documented problem here and still be sold here.

Questions

Is there an official Vermont invasive species list?

Yes. Vt. Quarantine #3 - Noxious Weeds; Code Vt. R. 20-031-021 is Vermont's list, naming 39 plants under a trade restriction, which governs what may be sold, propagated, or moved within the state — in plain terms, which plants are illegal to sell here. GRIIS, the Global Register of Introduced and Invasive Species, flags 31 of these 39 as invasive in the lower 48 states. That is an ecological finding, not a ruling by Vermont. This page shows both side by side.

What plants are illegal to sell in Vermont?

39 plants are regulated under Vt. Quarantine #3 - Noxious Weeds; Code Vt. R. 20-031-021. Plants marked Prohibited may not be sold, propagated, or moved within Vermont. Plants marked Restricted carry narrower limits set by the rule.

Is my plant invasive in Vermont?

Search the table on this page for Vermont's legal determination, then look for the Invasive chip beside it, which is a separate ecological finding from GRIIS rather than a ruling by Vermont. A plant can carry one, both, or neither. For an address-level answer, enter the plant's name in Ezina's checker to get its Vermont status alongside whether USDA records it as native to your specific county. Every answer links the record it came from.

Is it illegal to plant these in Vermont?

For the plants marked Prohibited, Vt. Quarantine #3 - Noxious Weeds; Code Vt. R. 20-031-021 bars selling, propagating, or moving them within Vermont. Whether planting one you already own is itself an offence depends on that rule's exact wording, which is why every plant on this page links the citation rather than us paraphrasing it. Plants marked Restricted carry narrower limits the rule sets out.

Does a plant missing from this list mean it is safe to plant in Vermont?

No. This page reproduces what Vermont regulates, and a state list is a legal instrument rather than an ecological verdict. Plenty of plants spread aggressively without ever being listed, and states add species years after the problem is documented.

Grow natives easily with Ezina

How it works

We provide the tools you need to succeed.

The Ezina app identifying a plant: a live camera view framing pink coneflowers, with Plant, Disease/Insect, and Both scan modes.
010.1Identify

Add a plant

Snap a photo or type the name. Ezina matches it to a library of about 40,000 species and starts a care plan tailored to your zone, the local weather, and the time of year.

The Ezina app’s care screen: water needs showing status Okay, last watered 12 days ago, a suggested volume, and a treatment section.
010.2Care

Get a care plan

A schedule built from local rain, temperature, and sun, not a fixed weekly cadence. You get a single notification when a plant actually needs water. Easily add treatments for diseases and pests.

The Ezina Dig planner: a starting-plan site map with suggested garden beds you can draw with your finger.
010.3Plan

Explore new options

Our garden planner Dig helps you understand what works best for your location and makes suggestions based off your long term goals.

Add a plant

Snap a photo or type the name. Ezina matches it to a library of about 40,000 species and starts a care plan tailored to your zone, the local weather, and the time of year.

Compiled from peer-reviewed research, USDA documentation,
and direct scientific observation across the United States.

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