The Nuisance Plants section lists plants that: (1) have a tendency to dominate plant communities, or (2) are considered harmful to humans. Nuisance plants may be native, naturalized, or exotic. Plants in this list are identified by their scientific and common name, and their indicator status.
Plants on this list can be removed without environmental or greenway review. Other local, state or federal laws may still regulate removal of certain plants on this list. These plants may be native, naturalized, or exotic. They are divided into two groups: plants that are considered a nuisance because of their tendency to dominate plant communities, and plants which are considered harmful to humans.
Nuisance Plant List: Dominating Plants
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Acer platanoides |
Norway maple |
NI |
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Ailanthus altissima |
tree-of-heaven |
NI |
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Alliaria officinalis |
garlic mustard |
|
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Chelidonium majus |
lesser celandine |
|
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Cirsium arvense |
Canada thistle |
FACU+ |
|
Cirsium vulgare |
common thistle |
FACU |
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Clematis ligusticifolia |
western clematis |
FAC- |
|
Clematis vitalba |
traveler's joy |
|
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Convolvulus arvensis |
field morning-glory |
|
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Convolvulus seppium |
lady's-nightcap |
|
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Cortaderia selloana |
Pampas grass |
|
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Crataegus sp. except C. douglasii |
hawthorn, except native species |
|
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Daucus carota |
Queen Anne's lace |
|
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Egeria densa* |
South American waterweed* |
OBL |
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Elodea densa |
South American waterweed |
|
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Equisetum arvense |
common horsetail |
FAC |
|
Equisetum telemateia |
giant horsetail |
FACW |
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Erodium cicutarium |
crane's bill |
|
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Geranium robertianum |
Robert geranium |
|
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Hypericum perforatum |
St. John's wort |
|
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Ilex aquafolium |
English holly |
|
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Iris pseudacorus |
yellow flag |
OBL |
|
Lemna minor |
duckweed, water lentil |
OBL |
|
Leontodon autumnalis |
fall dandelion |
FAC |
|
Myriophyllum spicatum |
Eurasian watermilfoil |
OBL |
|
Poa annua |
annual bluegrass |
FAC |
|
Polygonum coccineum |
water smartweed |
OBL |
|
Polygonum convolvulus |
climbing bindweed |
FACU- |
|
Polygonum sachalinense |
giant knotweed |
FACU |
|
Prunus laurocerasus |
English, Portugese laurel |
|
|
Rubus laciniatus |
evergreen blackberry |
FACU+ |
|
Senecio jacobaea |
tansy ragwort |
FACU |
|
Solanum dulcamara |
blue bindweed |
FAC+ |
|
Solanum sarrachoides |
hairy nightshade |
|
|
Taraxacum officinale |
common dandelion |
FACU |
|
Utricularia vulgaris |
common bladderwort |
|
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Vinca major |
periwinkle (large leaf) |
|
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Vinca minor |
periwinkle (small leaf) |
|
|
Xanthium spinoseum |
spiny cocklebur |
FACU |
| various genera |
bamboo sp. |
|
|
Conium maculatum |
poison-hemlock |
FACW- |
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Laburnum watereri |
golden chain tree |
|
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Rhus diversiloba |
poison oak |
|
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Solanum nigrum |
garden nightshade |
FACU |