NEW! Invasive Plant Guide by HAT

We have finally released a new publication about Invasive Plants!

Invasive species are plants or animals are introduced (non-native) species that cause harm or negative impacts to the environment, economy and human and animal health. Invasive plants spread quickly and out-compete other species. They have few natural controls to keep their population in check. Some invasive plants modify soil chemistry to reduce success of plants nearby. The below list offers additional resources to the information found in HAT's Invasive Plants In Your Garden Guide. The links below offer a variety of resources, groups, and other supplemental materials that can help us stay up to date, or simply more informed on invasive species and methods of interacting with them.


NEW Invasive Plants In Your Garden Guide DOWNLOAD (PDF - DROPBOX)

If you do not use Dropbox or cannot access the file, we can send an copy by email if you contact us at This email address is being protected from spambots. You need JavaScript enabled to view it.

Additional Resources:

BC Inter-Ministry Invasive Species Working Group

Coastal Invasive Species Committee

For HAT's Gardening with Native Plants Guide & HAT's Urban Forest Guide please see our Publications page.

Invasive Species Council of BC

Garry Oak Ecosystem Restoration Team - Invasive Species Publications

Saanich Priority Invasive Plants such as: Gorse, Yellow Flag Iris, Poison Hemlock, Knotweeds, & Giant Hogweed 

Noxious Weeds in King County, Washington

BC Report-A-Weed - online invasive plant reporting website & mobile App



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