Pruning Primer Demo

April Program Speaker – Lee Boltwood

Tuesday April 23 @ 7:30-9 pm

Join us for an evening with Master Gardener Lee Boltwood. This will be a hands-on workshop demonstration of the basics of good pruning practice, from the best tools to use, and sanitation, to techniques for felling a mature tree.

Lee Boltwood is an original member of the Master Gardeners of Ottawa-Carleton, having participated in the program since 1986. With over fifty years of gardening experience, she has also served as a past president of the Stittsville-Goulbourn Horticultural Society, among many other roles. Lee’s significant impact on the local horticultural community was recognized in 2022 when then-Mayor Jim Watson named a new park in Stittsville in her honor, dubbing it Lee Boltwood Park

This is a Hybrid meeting: in-person at the Tom Brown Arena, and via the OHS YouTube Channel.

Save the Dates!

OHS 2024 Plants Sales and Auction

Friends of the Farm (FoF): Rare and Unusual Plant Sale:
Experimental Farm ~ Sunday May 12 ~ 9-12 noon   *Member details here*

OHS Auction & Plant Sale:
Tom Brown Arena ~ Tuesday May 21 ~ 7-9 pm

Ottawa South Porch Sale:
Location: Ottawa South (exact location TBC) ~ Saturday Sept 7

Members, as  your favorite plants emerge, we welcome your contributions, however, please bring no more than five divisions of any variety to our upcoming plant sales. 

Our events are vital for OHS’s fundraising and community engagement. Volunteering offers a chance to meet others and enrich your experience. Share your availability and skills with us, and we’ll match you with the right role. We’re currently seeking plant sales coordinators and assistants. Look out for the upcoming sign-up sheet for more opportunities

Please contact Maureen Mark ( if you are interested in taking a leading role in plant sales.

Members:  Please note the following,  CLICK HERE FOR MORE INFO ON THE JUMPING WORM RISK .

Other Events: The Ottawa Orchid Society 40th Annual Show and Sale

April 27-28, 2024

The Ottawa Orchid Society’s annual show and sale (Orchidophilia)  will take place on:

Saturday, April 27, 2024     noon – 5:00 p.m.

Sunday, April 28, 2024       9:00 a.m. – 4:00 p.m

Location: Algonquin College, 1385 Woodroffe Avenue, Bldg D.

Blooming orchid displays, plant sales and more. Free parking in Lots 8 and 9. Admission: adults $15; seniors and youth $12; Children under 12 free.

Limited advance tickets (100) at $30 each are being sold on Eventbrite. Valid for early entry to the vendors area between 11-12 noon on Saturday (before the show opens).

More information and details such as regular and advance entry ticket purchases please follow this link Ottawa Orchid Society 


Planning Your Native Plant Garden

March Program Speaker: Sundaura Alford-Purvis

Sundaura Alford-Purvis will discuss why swapping native plants for the mostly Asian and European garden plants typically found in nurseries can often have unexpected, even discouraging, results. She will follow this up with a tutorial on how to plan plant combinations that avoid most of the common challenges faced by new native plant gardeners.

~~~ Due to unforeseen technical difficulties with the scheduled March 26th presentation, the OHS is working with Sundaura to upload her talk to our YouTube channel shortly. We will notify everyone as soon as it becomes available. Our sincere apologies for any inconvenience this may have caused. ~~~

This is via the OHS YouTube channel.

2024 OHS Photographic Competition

Light, flower, camera…action!”

Attention all members and photobugs! We are pleased to announce that the theme for the 2024 competition is
The Cinematic Garden”.

Movies and flowers have much in common … romance, symbolism, plots, variety, star-power and, of course, photogenic and emotive beauty!

For a downloadable copy of the detailed competition classes and entry rules, please click on the following link: Rules & More.  Submission deadline for entries is October 24, 2024. Winners will be announced at the Annual General Meeting (AGM) in December.

Looking forward to all the wonderful entries for 2024!  Good luck to all.

Photo Credit: Larry Chamney, “Anemone” (2023)

About the Society

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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Program meetings, most often open to the public, are held every month from September to June. Currently we meet in person and use hybrid technology to live-stream presentations. Check out general event information, past presentations, as well as the upcoming schedule.


We hold three main plant sales each year – two in the Spring and one in the Fall, all open to the public.

We also have flower shows, a photo competition and garden tours for members, and do community planting work.

Gardening Tips

New to gardening or looking to learn more? Check out our gardening section including our Gardening 101 articles and other gardening information, including a video on growing from seed, and ideas for native plants to consider in your garden.

Members’ Section

Access the members only section to read the latest Newsletter and consult Yearbooks, other recent Newsletters, and more.  Password required.