For the last 150 years, the Ontario Agricultural College (OAC) has supported the lifeline of the agri-food sector, exploring and improving how we feed the world, build communities and ensure the environment thrives. 

Since 1874, OAC’s innovations have changed how and what we eat and how we impact our environment. In the 1950s, OAC bred the Guelph Millennium Asparagus, now the industry standard for Ontario farmers. In 1966, OAC’s Gary Johnston created the household staple Yukon Gold Potato. Today, Dr. Manjusri Misra and Amar Mohanty are working together to create sustainably produced plastics and foam out of soy. These are just a few of the many innovations to come out of OAClearn more about OAC’s history and innovations.

“We’re excited for this opportunity to bring the OAC community together to reminisce, reconnect, and reflect on our impact on the global agri-food system,” said Dr. John Cranfield, acting dean of OAC. “Our alumni, students, staff and faculty are incredibly passionate about what they do and we’re excited to see what our community will achieve in the next 150 years.” 

Join OAC to celebrate its 150th anniversary starting on May 1 and reflect on OAC’s impact as a global leader in food, agriculture, communities and the environment. 

An OAC student at the 2023 Tractor Tug for Tots

Show off your OAC pride in style 

Get ready to don your OAC gear and show off your OAC pride! Wear your OAC jacket or OAC/U of G apparel to work or class on May 1st and take a selfie to join the #OAC150 challenge.

Those that post their selfies on social using the hashtag #OAC150 or send their photo to will be entered into a draw for OAC 150 merch. 

Taste the OAC Goodness 

Did you know that top OAC innovations include household staples like Guelph Millennium Asparagus or the Yukon Gold Potato? Get a taste of the impact OAC has had on the food system by grabbing a locally inspired meal featuring OAC-themed ingredients at the UC Chef’s Hall on May 1.  

OAC has been working with the Guelph Food innovation Centre to develop an OAC inspired ice cream flavour. Stay tuned for an opportunity in May to purchase a pint on campus! 

An OAC plant science class in 1998 (Courtesy of U of G Archival and Special Collections).

Share your OAC memories 

Do you have memories of OAC as an alumni or campus community member?

Help us reminisce together by sharing your favourite memories and photos by emailing Photos may be shared on social media. 

OAC 150th Celebration Dinner and Alumni Weekend 

OAC is welcoming up to 800 alumni and friends for a historic gathering on Johnston Green with a delectable dinner, vibrant music and the spirit of a family reunion during Alumni Weekend June 21 to 23. 

Deep Dish Dialogues with OAC researchers 

Explore impactful subjects in this online event series that also showcases chefs and food experts. For May and June, OAC researchers will explore topics of bread and gluten science and the farm to table movement . This series is hosted in collaboration with the Arrell Food Institute and the School of Hospitality, Food and Tourism Management. Learn more about Deep Dish Dialogues.

Thursday, May 16 and Thursday, June 27, noon to 1 p.m., (online; some limited capacity in person) 

The Judging Pavilion, now known as the Bullring, in the early 1900’s ( Courtesy of U of G Archival and Special Collections).

History Tours of Campus 

In August, OAC will be offering a series of tours to provide visitors with a deep understanding of OAC’s evolution, architectural significance, and the stories woven into its foundation. 

U of G Library OAC History Display 

From June to November, visit the U of G library to explore a captivating display of artifacts, showcasing the OAC’s rich history and impact, featuring photos, academic memorabilia, and pivotal moments that have shaped Ontario’s agricultural legacy. 

Food Day Canada Celebrations 

Engaging and inspiring everyone to shop, cook & dine Canadian! Stay tuned for details on a special University of Guelph celebration. 

Interested in learning more about the OAC 150th celebrations and the history of OAC? Visit the OAC 150 website for more information and events.  

Starting in May, you can explore OAC’s timeline, read alumni oral histories, view photos and videos from the last 150 years, and purchase exclusive OAC 150 merchandise.