Gardening And Alien Plants situations BIODIVERSITY Gardening is an by henrypford


 Gardening And                       WEEDS:
                                                                                                                                         Invasive Alien Plants:
  Alien Plants                Native or alien plants                                                                                      The Other “CFAs”
                             that grow in naturally
 Gardening is an               disturbed or human                                                                                                   (Come From Aways)
 enriching, rewarding          disturbed habitats,
 and healthy pastime and      including roadsides,                                                                                      Of the 4,000 species of plants growing in Canada,
 MUN Botanical Garden         gardens, and burned                                                                                       about 800 are non-native or alien. Over 35 per cent
 encourages everyone to              forests.                                                                                           of plant species in Newfoundland and Labrador are
 participate in gardening – but                                                                                                         aliens. Some were introduced accidentally while
 with care and caution. Most of the                     MUN Botanical Garden Inc.                                                       others were intentionally introduced; some have
 plants that we use in our flower beds are alien         Memorial University of Newfoundland                                             been here for centuries while others are new
 to Newfoundland and Labrador. Most of these            St. John’s, NL A1C 5S7                                                          arrivals. And while many are quietly living amongst
 plants are well-behaved guests in our province,        Phone: (709) 737-8590                                                           us, some have become invasive, causing serious
 but throughout Canada some garden plants               Fax: (709) 737-8596                                                             environmental damage.
 are escaping and invading natural habitats,  
 causing havoc on native vegetation and reducing                                                                   The extent of the problems caused by invasive
 biodiversity. While our cooler climate and shorter                                                                                     alien plants in Newfoundland and Labrador is
 growing season results in comparatively fewer                                                                                          not as extreme as in other parts of Canada or the
 invasive species, we do need to be cautious.
 Everyone must share the responsibility in
                                                                                                             Invasive Alien Plants      world. However, action must be taken to prevent
                                                                                                                                        the loss of biodiversity. The introduction of invasive

                                                                                                               in Newfoundland

                                                                                                                                        alien species must be stopped and current problem
 protecting the natural beauty and diversity                                                                                            species must be managed.
                                                        Department of Environment and Conservation
 of this province. Join MUN
 Botanical Garden              GARDEN BRUTES:
                                                                                                                 and Labrador:

 as we endeavour to              Plants that grow
 prevent the spread of           aggressively in
 invasive alien plants in
 Newfoundland and
                                 garden settings,
                                but will not thrive
                                                                                                             The Other “CFAs”                     INVASIVE ALIEN SPECIES:
 Labrador.                     beyond these ideal                                                                                      Alien organisms which successfully establish,

                                  situations.                                                                                          thrive and overtake natural ecosystems – often
                                                                                                                                           competing with native organisms and
                                                                                                                                                 destroying native habitat.

      BIODIVERSITY:                                                                                                                                                     ALIEN SPECIES:
   The variety of life                                                                                                                                             (introduced, non-native,

 within a specified area.                               Acknowledgements                                                                                           exotic, non-indigenous)
                                                        Project funding provided by Invasive Alien Species
                             NATIVE (INDIGENOUS)        Partnership Program, Environment Canada.                                                                     Plants, animals and
                                   SPECIES:             Photos provided by John E. Maunder, Todd Boland                              NATURALIZED PLANTS:               micro-organisms
                                                        and Tim Walsh.
                            Originally from the area.                                                                                  Alien plants which             existing in habitats
                                                        050-041-03-07-1,000                                                          establish and reproduce         beyond their natural
                                                                                                                                     in natural or disturbed           distribution. Their
St. John’s                                              Yellow iris                                                                  habitats without human         introduction is usually
                                                                                                                                      intervention, but will         caused by humans or
                                                                                                                                      not interfere with the         human activities but
                                                                                                                                       natural ecosystem.             most do not become
                                                                   Did You Know?                                     Characteristics Of                               Plants To Keep A “Watchful
                                                       This is a global problem. Next to habitat                   Invasive Alien Plants:                              Eye” On In This Province:
                                                       destruction, invasive alien species are the
                                                       greatest threat to the loss of global biodiversity.    0    Ability to establish in natural areas            0   Black knapweed           0    St. John’s wort
       How Do Invasive Alien                                                                                  0    Easily pollinated by wind or insects             0   Cattail                  0    Wild chervil
         Species Spread?                               This is a national problem. The Federal
                                                       Government recognizes the need for prevention,              High seed production                             0   Canada thistle           0    Common reed
  Alien species are rarely discovered until they are   early detection, rapid response, and management        0    Seeds can germinate in many types of habitats    0   Japanese knotweed        0    Coltsfoot
  invasive and spread, and then it is often difficult   of invasive alien species.
  to trace the path of introduction.
                                                                                                              0    Seeds live a long time
                                                                                                                                                                    0   Goutweed                 0    Yellow Iris

                                                       This is a provincial problem. Natural communities      0    Mature and set seed rapidly
  Human activities and disturbances, such as           on islands are particularly vulnerable to invasive
                                                                                                                                                                        Purple loosestrife       0    Sea buckthorn
  logging, agriculture and urbanization help           alien species.
                                                                                                              0    Seeds can travel long distances
  spread alien plant species.                                                                                 0    Can reproduce by seed and/or vegetatively

  Birds and other animals also help to spread the
                                                        Should We Be Concerned                                0    Competes with native plants for sunlight,
  seeds of alien plant species.                           About Invasive Alien                                     nutrients, space, etc.

  Some alien plant species were purposely
                                                        Species in Newfoundland
  introduced as ornamentals, for culinary and                and Labrador?
  medicinal use, or for revegetation projects.                                                                                Things You Can Do To Prevent An “Invasion”
                                                                    YES OF COURSE!
  Some alien plant species were accidentally                                                                 Learn about new plant species before you grow          Remove any garden plants that have spread from
  introduced as packaging material, and                Development of our highways and power lines           them. Many are sterile and will not be a problem.      your property.
  contaminants in seed crops, livestock feed and       create disturbance corridors, assisting in the        Others are not hardy in our winters and won’t be a
  soils.                                               spread of alien species.                              problem.                                               Never bring seeds or plants into Canada without
                                                                                                                                                                    having them inspected.
  Extensive world-wide exchange of goods and           Some potentially invasive plant species are           Ask about alternative native plants at your local
  widespread travel have made the arrival of
                                                       already present in this province and may              nurseries.                                             Contribute to local efforts to manage invasive alien
  invasive alien plants more probable.
                                                       continue to spread.                                                                                          plants. Become a volunteer to monitor the
                                                                                                             Properly compost garden waste. Seeds, sods and         expansion of alien plants in your region.
                                                       Not only plants, but introduced animals are           clippings can easily establish themselves when
                                                       also causing havoc on the regeneration of             dumped in natural habitats.                            Visit to report any invasive
                                                       our forests.                                                                                                 alien plant species.

                                                       The spread of the human population will make
                                                       it easier for potentially invasive alien species to
                                                       increase their range.
                                                                                                                                             Meet Your “Canadian Bandits”:
                                                                                                             Scotch broom (Cytisus scoparius) Scotch broom          successfully into forest edges threatening the
                                                                                                             interferes with forest regeneration and affects        biodiversity of forest understory.
Wild chervil                                           Canada thistle                                        endangered native plant species in British Columbia.
                                                                                                                                                                    English ivy (Hedera helix) English ivy grows on
                                                                                                             Norway maple (Acer platanoides) Norway maple           almost anything, including other trees and plants.
                                                                                                             is considered one of the most invasive species in      The added weight can make the plants susceptible
                                                                                                             Southern Ontario and Quebec. It can naturalize         to damage. It is a problematic plant in British
                                                                                                                                                                    Columbia and Ontario.

To top