THUNDER BAY — An invasive plant first discovered three years ago along the McVicar Creek recreation trail has already spread to at least one other area of Thunder Bay.
The Garlic Mustard threatens local ecosystems as it can quickly reduce biodiversity.
EcoSuperior says a recent survey found that it has now made its way to recreation trails behind the Lakehead Psychiatric Hospital.
"This discovery has only highlighted the importance of controlling the McVicar Creek population to prevent any further spread within the city," a news release from EcoSuperior states.
The organization is asking residents to take part in a Garlic Mustard pull the evening of Thursday, June 28.
Garlic Mustard is an herb native to Europe. Since its arrival in North America in the early 1800s, it has become what the Ministry of Natural Resources and Forestry describes as one of Ontario’s most aggressive forest invaders.
According to information from Ontario's Invasive Species Awareness Program, stands of Garlic Mustard can double in size every four years.
The seeds are easily spread by people and animals. They can remain in the soil for up to 30 years and still be able to sprout. The plant can grow in a wide range of sunny and fully shaded habitats, including undisturbed forest, forest edges, riverbanks and roadsides.
EcoSuperior Environmental Programs' invasive species intern Melissa Davidson said it can produce chemicals that inhibit the growth of other plants.
"Garlic Mustard can outcompete many native plant species such as trilliums and native violets," Davidson said.
EcoSuperior and other volunteer groups such as the Thunder Bay Field Naturalists, Master Gardens and Horticultural Society have been working to control the plant's spread by preventing further additions to the seedbank.
Residents can also reduce the risk of spreading seeds by cleaning their shoes or bicycle tires when leaving a recreational area.
The Garlic Mustard pull will begin at 6:00 p.m. Thursday at the head of the McVicar Creek recreational trail on Court Street.
No experience is necessary.
