06/05/2026
Meet garlic mustard! 🌱
Although these tiny four-petalled flowers may look appealing, they belong to garlic mustard (Alliaria petiolata), an invasive plant species originally introduced from Europe.
Garlic mustard spreads rapidly and competes with native plants for sunlight, water, nutrients, and space. It also releases chemicals into the soil that disrupt beneficial fungi that many native plants rely on to grow. Over time, this can reduce biodiversity and make it harder for local plants, pollinators, and wildlife to thrive.
When we first established our 53 TPD garden, garlic mustard covered much of the area. Even after years of removal efforts, its seeds can continue to spread into the garden from the adjoining valley. Whenever we spot garlic mustard, we carefully remove it before it produces seeds to help protect the health of our growing spaces and surrounding ecosystem.
This is why garlic mustard is considered a serious threat to gardens and natural habitats across Ontario.
Learning to identify and manage invasive species is an important part of urban farming and environmental stewardship. 🌿
