Coastal Invasive Species Committee


Priority Invasive Plants

Common_Reed_Phragmites_australis_CC_Attribution_visulogik garlic_mustard_flowering.ashx gorse1 RUBUS_URSINUS
Giant Reed
Garlic Mustard

Himalayan blackberry


The following is a list of Coastal ISC's current Priority Invasive Plants within the Management Categories: Prevent, Eradicate, Control and Contain. Click on any of the species images for more information on identification, management, and links to additional resources. 

Download the Coastal ISC Priority Invasive Plant List Here.   

The categorization of species is representative of the Coastal ISC management area as a whole. Management actions will vary based on different sub-regions and specific site conditions. The Capital Region (CRISP), sub-region list

To bring new plants of concern forward for consideration to be added to this Priority Invasive Plant list, This email address is being protected from spambots. You need JavaScript enabled to view it. with your rationale and it will be brought forward at the next quarterly board meeting for discussion.

Invasive  Plant Profiles (click the photos to find out more):


Screen_Shot_2016-05-30_at_3.26.09_PM.png Screen_Shot_2016-05-30_at_3.07.09_PM.png Screen_Shot_2016-06-01_at_3.30.07_PM.png


               (Peuraria montana)

                    Giant Hogweed

         (Heracleum mantegazzianum)

                     Garlic Mustard

                   (Alliaria petiolata)

                      Milk Thistle

               (Silybum marianum)


Screen_Shot_2016-05-30_at_3.08.14_PM.png                     Screen_Shot_2016-06-08_at_11.20.24_AM.png       Screen_Shot_2016-05-30_at_3.09.15_PM.png         Screen_Shot_2016-05-30_at_3.09.44_PM.png

                      Wild Chervil

               (Anthriscus sylvestris)

                    Carpet Burweed

                    (Soliva sessilis)

                   Orange Hawkweed

               (Hieracium aurantiacum)

                   Diffuse Knapweed

                  (Centaurea diffusa)




Screen_Shot_2016-05-30_at_3.10.56_PM.png Screen_Shot_2016-05-30_at_3.11.49_PM.png Screen_Shot_2016-05-30_at_3.12.41_PM.png Screen_Shot_2016-05-30_at_3.13.39_PM.png

                 Spotted Knapweed

               (Centaurea maculosa)

                 Japanese Knotweed

                  (Fallopia japonica)

                   Poison Hemlock

               (Conium maculatum)

                   Yellow Flag Iris

                 (Iris pseudacorus)



Screen_Shot_2016-05-30_at_3.14.56_PM.png Screen_Shot_2016-05-30_at_3.15.46_PM.png Screen_Shot_2016-05-30_at_3.16.28_PM.png Screen_Shot_2016-05-30_at_3.17.16_PM.png

                     English Holly

                  (Ilex aquifolium)

                        English Ivy

                      (Hedera helix)

                  Butterfly Bush

                (Buddleja davidii)


                   (Ulex europaeus)



Screen_Shot_2016-05-31_at_3.24.55_PM.png        Screen_Shot_2016-06-08_at_3.06.03_PM.png           Screen_Shot_2016-06-08_at_3.19.51_PM.png  Screen_Shot_2016-06-08_at_3.34.14_PM.png

         Yellow Garden Loosestrife

          (Lysimachia vulgaris)


              (Echium vulgare)

                      Sulphur Cinquefoil

                      (Potentilla recta)

                Hoary Alyssum

              (Berteroa incana)



 Screen_Shot_2016-06-08_at_3.39.27_PM.png           Screen_Shot_2016-06-21_at_10.05.19_AM.png  Screen_Shot_2016-06-21_at_10.08.07_AM.png Yellow-Thistle-Field-710.jpg 

                Hoary Cress

            (Cardaria draba)

                          Common Fennel

                       (Foeniculum vulgare) 

               Lesser Celendine

                (Ficaria verna) 

         Yellow Star Thistle

      (Centaurea solstitalis)