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Species Information

Below is an alphabetical listing (by scientific name) of some of the invasive species in our region. Click on the column header to sort by that column or search using the filter below.

Species (Scientific) Species (Common) Biological Category Typesort descending Status
Centaurea jacea Brown knapweed, Brown starthistle Plants Other Herbaceous Tier 4 - Widespread
Houttuynia cordata Chameleon plant Plants Other Herbaceous Tier 5 - Watch
Centaurea nigra Black knapweed, Lesser knapweed Plants Other Herbaceous Tier 4 - Widespread
Cardamine impatiens Narrowleaf bittercress Plants Other Herbaceous Tier 3 - Established
Hyacinthoides hispanica Spanish bluebells Plants Other Herbaceous Tier 5 - Watch
Cirsium vulgare Bull thistle Plants Other Herbaceous Tier 4 - Widespread
Cirsium arvense Canada thistle Plants Other Herbaceous Tier 4 - Widespread
Vinca minor Common periwinkle, Lesser periwinkle Plants Other Herbaceous Tier 5 - Watch
Perilla frutescens Beefsteak plant Plants Other Herbaceous Tier 2 - Emerging
Dipsacus fullonum Fuller's teasel, common teasel, venuscup Plants Other Herbaceous Tier 4 - Widespread
Centaurea stoebe Spotted knapweed Plants Other Herbaceous Tier 4 - Widespread
Primula japonica Japanese primrose Plants Other Herbaceous Tier 2 - Emerging
Lamium galeobdolon Yellow archangel Plants Other Herbaceous Tier 5 - Watch
Achyranthes japonica Japanese Chaff Flower Plants Other Herbaceous Tier 1 - Threat
Euphorbia cyparissias Cypress spurge Plants Other Herbaceous Tier 3 - Established
Hydrocharis morsus-ranae Frogbit Plants Aquatic Invasives Tier 1 - Threat
Potamogeton crispus Curly-leaf pondweed Plants Aquatic Invasives Tier 4 - Widespread
Crassula helmsii Swamp crop, Pygmyweed Plants Aquatic Invasives Tier 1 - Threat
Myriophyllum spicatum Eurasian Watermilfoil Plants Aquatic Invasives Tier 4 - Widespread
Trapa natans Water Chestnut Plants Aquatic Invasives Tier 3 - Established

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