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Colour photograph of 4 people looking at plant ID sheets hanging from a line in front of their faces. Explore The Arboretum's trails A aerial photo of the Arboretum a photo of Ducklings ona log,  Photo by Brenda Doherty. Image of biodiversity sheets reads "Our biodiversity sheets are for sale - 25 to choose from. They'll neer know they're learning.""

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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.

Arboretum on Twitter

5 hours 34 min ago

The Arboretum grounds will remain open during planned construction closure of College Avenue starting September 21,…

2 days 3 hours ago

The Cherry Birch saplings available in our virtual plant auction right now are actually offspring from our Rare Woo…

2 days 8 hours ago

It’s the day you’ve all been waiting for: our annual plant sale will be live at 9 am! This year, it will be a virtu…

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

Download a Map

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


Arboretum Explorer

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


Arboretum Merchandise

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


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Arboretum Centre Auditorium Outdoor Ceremony Site Celebrating 50 Years of The Arboretum. Tracing our roots and growing on Arboretum Centre Auditorium Arboretum Centre Board Room

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