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a photo of Ducklings ona log,  Photo by Brenda Doherty.

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Welcome to The Arboretum!

Arboretum Grounds Open, Building Facilities Remain Closed.

Our grounds are now open for walking and permitted activities! Practice physical distancing and keep your dogs on leash at all times. Visit U of Guelph COVID-19 for up-to-date news. The Arboretum is free and open to the public from dawn until dusk.

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

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It's time again to add a bit more nature to your day with one of our weekly videos! This week, follow Naturalist In…

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Green Frogs are variable in appearance and can be green, bronze, or a combination but this dapper guy stays true to…

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

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

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