The following is a list of the CIPC's current priority species and suggested 'Action' categories
NOTE: The categorization of species is representative of the CIPC management as a whole. Suggested actions will vary, based on different sub-regions and specific sites within the CIPC management area.
Click on the plant names to see details and images.
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PREVENT
Species not known to occur in region, but likely to establish if introduced.
Eradicate if found.
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Common Crupina Crupina vulgaris
Cordgrass, Salt-meadow Spartina alterniflora
Common Reed Phragmites australis
Giant Reed Arundo donax
Kudzu Pueraria Montana
Russian Knapweed Acroptilon repens
Yellow Starthistle Centaurea solstitialis
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ERADICATE
Species known to occur in limited distribution and low density.
Eradicate if found.
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Bur Chervil Anthriscus caucalis
Cordgrass, English Spartina anglica
Cordgrass, Dense-flowered Spartina densiflora
Cordgrass, Saltwater Spartina patens
Garlic Mustard Alliaria petiolata
Giant Hogweed Heracleum mantegazzianum (T)
Giant Mannagrass Glyceria maxima
Jimsonweed/Devil's Apple Datura stramonium (T)
Milk Thistle Silybum marianum
Orange and Yellow Hawkweed Hieracium aurantiacum
Wild Chervil Anthriscus sylvestris
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CONTAIN
Established infestations found in portions of the region.
Contain existing infestations and prevent spread to un-infested areas.
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Butterfly Bush Buddleja davidii
Carpet Burweed Soliva sessilis
Daphne/Spurge-Laurel Daphne laureola (T)
Diffuse Knapweed Centaurea diffusa
Eurasian Water-milfoil Myriophyllum spicatum
Garden (Yellow) Loosestrife Lysimachia vulgaris
Gorse Ulex europaeus
Knotweed, Bohemian Fallopia x bohemica
Knotweed, Giant Fallopia sachalinensis
Knotweed, Himalayan Polygonum polystachum
Knotweed, Japanese Fallopia japonica
Policemans Helmet/Himalayan Balsam Impatiens glandulifera
Yellow Flag Iris Iris pseudacorus
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CONTROL
Established infestations common and widespread throughout the CIPC region.
Focus control in high value conservation areas.
Use biological control, if available, on a landscape scale.
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Burdock Species Arctium spp.
Canada Thistle Cirsium arvense (B)
Common Tansy Tanacetum vulgare
Dalmatian Toadflax Linaria dalmaticab (B)
English Holly Ilex aquifolium
English Ivy Hedera helix
Hairy Cat's Ear Hypochaeris radicata
Himalayan Blackberry Rubus armeniacus (discolor)
Periwinkle Species Vinca spp.
Orchardgrass Dactylis glomerata
Purple Loosestrife Lythrum salicaria (B)
Scotch Broom Cytisus scoparius
Spotted Knapweed Centaurea maculosa (B)
St. John's Wort Hypericum perforatum (B)
Tansy Ragwort Senecio jacobaea (B)
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Supplemental Notes:
• The above lists are a merely starting point for public consultations; Feedback is encouraged.
• The above lists reflect the entire CIPC area. The placement of a species into a category at the landscape level is very likely to be different from a placement of a species into a category at the local level.
(B) = Invasive plants with biological control agents available
(T) = Invasive plants which pose potential human health and safety hazards
Invasive Plants
