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image of a honey bee and wasp in a purple clover bloom. colour photo of a forest with a field of trillums on the floor at dusk decorative image of a maple flowers Map featuring the planned updates to the Permaculture Garden in the Gosling Wildlife Gardens Banner image of trees and the words World of Trees, screen captured from trailer

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Welcome to the Arboretum

Arboretum grounds are open for walking and other permitted activities. Building facilities remain closed.
The Arboretum encompasses 400 acres adjacent to campus featuring plant collectionsgardenswalking trailsnatural woodlands, wetlands, and meadows. Established in 1970, The Arboretum is home to more than 2000 different taxa of woody plants, in thematic collections such as a synoptic World of TreesNative Trees of Ontario, and noteworthy collections of Oaks, Beeches, Maples, and Conifers.
We connect people with nature and enhance teaching, research, and outreach at the University. The Arboretum is integral to many undergraduate courses, and acts as a 'living laboratory', providing support, expertise, and a wide variety of plants, species, and environments for researchers at all levels. We offer dozens of workshops and public programs annually, and serve as a beautiful venue for special events.
Our strong focus on conservation of woody plants native to Ontario is implemented through long-running initiatives such as the Rare Woody Plants of Ontario program. We archive, in living gene banks, representative specimens of rare and at-risk trees and shrubs of the province. Through our Elm Recovery Project we are breeding a genetically diverse, Ontario-sourced American Elm population that is tolerant of Dutch Elm Disease.

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1 day 12 hours ago

This picture, taken in 1977, features a group of people on a guided tour of Victoria Woods trail. Although this sce… https://t.co/oV4uA9DZOL

3 days 8 hours ago

Beneath our grounds used to be our Rhizotron (now defunct). A Rhizotron is an underground gallery for researchers t… https://t.co/AnoYP4onNI

A new species of lichen has been discovered, and it's only found in the Arboretum! Watch this video to find out more!

Dedications and Donations

Donations to The Arboretum have a direct impact on our living plant collections, gardens, research, and educational programs.

Download a Map

Download a map to plan your next visit to The Arboretum!

Arboretum Merchandise

A variety of Arboretum merchandise and apparel is currently available for sale. Make sure to get yours today!

Arboretum Explorer

Looking for a specific tree or shrub? Want to explore The Arboretum with an interactive map? Click here!

What to See

What to See Image link to Instagram

Visit our Instagram to learn more about what to look out for at The Arboretum!