Join us for interesting speakers

The OHS meets the fourth Tuesday of the month from September to May and the third Tuesday in June.   Speakers cover a wide range of  garden related topics, from practical tips to travelogues.  In person meetings are held at the Tom Brown Arena, 141 Bayview Station Road, and start at 7:30 p.m.   Unless otherwise advertised, all meetings are open to the public at no charge.

While COVID restrictions are in place, presentations are taking place virtually and are being livestreamed on You Tube.


Check out the upcoming speakers here.

During COVID-19

With in-person meetings on hold due to COVID-19, the OHS has moved to online presentations.  Starting in September 2020, these are being streamed live on the the OHS You Tube channel.  Most presentations are available for OHS members for a short period after the event.  A few are available on an ongoing basis and can be accessed by clicking on the title below.   Upcoming presentation can be found through the schedule on the events page.

September 2020: A Snapshot of Arctic Botany: Paul Sokoloff

Scientists from the Canadian Museum of Nature have been documenting plants in the Canadian Arctic for over 100 years. Join us for this talk with Paul Sokoloff – frequently found digging up and pressing specimens in Nunavut and the Northwest Territories – covered the past and present of Arctic plant research at the Canadian Museum of Nature, including ongoing research and the links between these studies and your own gardens.  The presentation can be viewed here.

April 2020: Bringing the Outdoors In:  Amber Tiede

Amber is a floral designer and flower farmer here in the Ottawa area. She grew up in Oregon on the west coast until she married and moved to Canada … both she and her husband Ed run their business together along with the help of their four children.

She has shared the attached tips and video to spark some inspiration on how to bring nature into our homes.

February 2020: All From a Little Seed

Join OHS Member and Master Gardener Rebecca Last for a guide to growing plants from seed as well as other forms of propagation. Watch the recording here.

March 2020:  Design Basics and Plant Selection

Mary Ann Van Berlo guides us through the elements and principles of design and discusses how plants fit into the design principles and share some advice on plant selection. There are tips and pointers that we can use in our own gardens.  Note this video is not on the OHS You Tube Channel

Mary Ann is an avid gardener who volunteers with Master Gardeners of Ottawa-Carleton. Her 2.4 acre garden on the St. Lawrence is part of the 1000 Islands and Rideau Canal Garden Trail. Since the trail opened in June 2015, Mary Ann has welcomed many visitors and bus tours to her garden. In June, 2017, Mary Ann’s garden was featured in Ontario Gardener Magazine.


Gardening Calendar

OHS public events are also included on the Gardening Calendar at, a calendar of Ottawa gardening events. Instead of taking the time searching for events by visiting multiple Web sites, visit to see Ottawa events in one location.
This site helps you find a wide range of gardening events in the Ottawa region and also features a community blog where any gardeners in Ottawa can post an article, their thoughts or advice on any gardening topic