An invasive species is a species that has been introduced to a new area (either on purpose or accidentally) where it is not considered native and is a threat to our ecosystems for several reasons. These species are highly adaptable, have few to no predators, can reproduce quickly, thrive in disturbed ecosystems and perhaps most damaging, they out-compete native species for habitat and food. This week's featured invasive species is wild parsnip (pastinaca sativa). Here are some fast facts about the plant:

• Other names: Poison parsnip
• Native to: Europe and Asia
  
• Identifying Features: It has a yellow, umbrella-shaped flower with flat seeds and is often found in roadside ditches. It is usually between 0.5-1.5 m in heights, with a green stemm that is 2-5cm wide.
• Why it's problematic: This plant has damaging effects to both humans and other plants and animals. The sap from wild parsnip can cause severe burns and blisters if the affected area of skin is exposed to sunlight. In addition to this, the plant can grow in dense patches that out-compete native plants for sunlight and nutrients. Wild parsnip has been found to reduce weight gain in and fertility in animals that consume it. 
  
  If you come into contact with wild parsnip, make sure to cover the affected area so as to prevent exposure to the sun and then wash it with soap and water. If your skin still has a reaction, seek medical attention. 
  

Did you know that Ontario has more invasive species than any other province in Canada? In fact, there are 441 invasive plant species in Ontario alone. They pose a threat to our economy, our environment and can even impede our recreational activities. Over the next few weeks, Plenty Canada will be profiling a new invasive species each week that is specifically affecting Lanark and the surrounding area to help spread awareness about this issue.