What is an invasive plant?
- Accidentally or purposefully introduced from another part of the country or another country/continent
- Can be referred to as exotic, alien, introduced, non-native
Characteristics of Invasive Plants
- noted for ability to spread aggressively, and rapidly
- spread by seeds, shoots, roots or all 3
- have no predators in their new location, spread and displaces other plants
- adaptable; with a higher rate of mutation than natives
Where do they come from?
- Introduced from other parts of country; other countries/continents
- Imported on purpose as food, ornament, or to serve a purpose (to prevent soil erosion-kudzu)
- Accidental introduction in; bilge water, packing material, gravel, sand, soil, feed stocks, by travelling construction equipment, animals
Why are invasive plants a problem?
- Out-compete natives, forms a mono culture
- An alien plant invasion changes the ecosystem by changing the light, soil composition and temperature, micro-organisms in the soil, water availability, air temperature levels of the area
- Changes the quality and availability of food, water, nesting sites, perching sites, for animals, birds, insects = HABITAT LOSS
Common invasive plants you may know
- Goutweed, Aegopodium podagraia; Garlic Mustard, Alliaria petiolate; Himalayan Balsam, Impatiens glandulifera; Dog-strangling vine, Cynanchum rossicum; common reed, Phragmites australis; Norway Maple, Acer platanoides
Website of the Ontario Invasive Plant Council http://www.ontarioinvasiveplants.ca
Website of the Canadian Council on Invasive Species http://www.canadainvasives.ca
Website of Nature Conservancy Canada http://www.natureconservancy.ca
Book: Invasive Plants Second Edition by Dr.Sylvan Ramsey Kaufman and Wallace Kaufman. Published by Stackpole Books, 2012
Ssubmitted by Leslye Glover