September 22: In-person: A panel of Master Gardeners of Ottawa-Carleton Interesting Perspectives and Wisdom from the Master Gardeners of Ottawa-Carleton Join us for an engaging panel discussion featuring a group of experience Master Gardeners who will share their insights on a range of timely and practical gardening themes. From tackling common garden challenges to exploring…
OHS 2025 Photography Competition Announcement The 2025 Photography Competition is now open to OHS members! This year’s theme is:“The Garden is Your Canvas”, a celebration of creativity, nature, and personal expression.We’re excited to offer seven main classes for entries, plus a special eighth class for youth photographers. Submission Deadline:Entries must be received by October 6, 2025…
Be sure to arrive a little early on Tuesday October 28, the same night that well-known gardendesigner Sean James will be presenting his talk. OHS has also organized a little eco-fair thatsame night. Members who attend this in-person meeting will be able to participate in an indoor plant exchange. Bring a plant, trade a plant,…
Details to be announced in November.
Matt Bolding, Ecologist and GIS Professional, invasive Species Program Coordinator, Ducks Unlimited Canada (Eastern Region). Combating Invasive Plants: Tackling the Phragmites in OntarioInvasive Phragmites australis is an invasive grass that has had a devastating impact on the environment in Ontario and continues to cause a serious impact on both our natural ecosystems and…
Pat Lucey, Gardening Instructor, Canadian Organic Growers. Organic Gardening for the Home GardenerThis engaging talk by an experienced organic farming specialist has been tailored specifically for the home gardener. Learn practical tips and techniques to grow healthy, chemical-free plants while nurturing your soil and nourishing your health. If you are…
Food for Life: How Some Organizations in Ottawa are Addressing the Food Insecurity GapThis panel of community leaders, experts and speakers from the Ottawa area,who are actively working to address food insecurity in our community, will be joining us to share some important and encouraging information. Learn how innovative gardening initiatives, urban agriculture and special…
In-person presentation by Matthieu Morin, Food, Plant and Animal K9 Officer, Canada Border Services Agency (CBSA) A Team Approach to Protecting Canada’s Biosecurity: How A Detector Dog And His Handler Work Together On This Important IssueJoin us for a fascinating behind-the-scenes look at how the Canada Border Services Agency (CBSA) works to protect Canada’s environment…
June 16: In-person presentation by Nancy McDonald, Master Gardener of Ottawa-Carleton and member of the Ottawa Horticultural Society Culinary Delights With Herbs and Edible Flowers Nancy McDonald, Master Gardener, will shed a new light on how we can enjoy the fruits of our gardening labor in a different way. …
Speaker Series October 2025 “Learn and Grow with Us”In-person meeting with online presentation: Sean James, Horticulturist, Master Gardener, and owner of Sean James Consulting and Design. Note: In-person meeting will start at 7:00 pm, followed by online presentation which starts at 7:30 and ends at 9:00 pm. The online presentation will be streamed live via…
For over a century, we’ve been nurturing a love for gardening in Ottawa. Join us in celebrating our rich heritage and vibrant future. The Ottawa Horticultural Society is a non-profit society open to all gardeners. We invite you to join us in sharing our enthusiasm and knowledge of gardening.
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