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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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18 hours 59 min ago

Spring is on it's way and we're so excited! If you're looking for a creative outlet for all that excitement, join u…

1 day 14 hours ago

You’re walking #NextToHistory in OAC ’56 Park in the Garden. Situated in the center of The Arb, this expansive lawn…

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!

Dedications and Donations

The land where The Arboretum now grows has been home to plants and animals for thousands of years.  It was home to Indigenous peoples before settlers arrived. We recognize the Dish with One Spoon territory, the treaty lands of the Mississaugas of the Credit, and the Between the Lakes Treaty 3 lands on which the University of Guelph and The Arboretum now sit. We are honoured to work on and care for this land.