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Garlic Mustard

Plant with white flowers and four small petalsGarlic Mustard is an invasive herb native to Europe. It’s been present in North America since the 1800s.

Garlic Mustard spreads quickly and crowds out native plants. It also releases chemicals from its roots that can change soil chemistry. The loss of native plants reduces the biodiversity of an area. This results in reduced ecosystem health and less resilience to environmental change.

What it looks like

Garlic Mustard can look like several native Ontario plants. The best way to identify Garlic Mustard is to crush the leaves. If they have a strong garlic smell, then it’s most likely Garlic Mustard.

How it spreads

Garlic Mustard seeds fall close to the parent plant, but are spread over long distances by humans, pets and wildlife. Seeds can be carried on items including boots, fur or clothing.

What you can do

You can help stop the spread of Garlic Mustard. We need volunteers for the City’s Garlic Mustard Task Force. You’ll receive training and be assigned to a park or natural area near your home.

If you’re interesting in volunteering for the Garlic Mustard Task Force, email parks.forestry@mississauga.ca for more information.