Growing and Designing with Flowers

Tuesday June 18th* @ 7:30 pm | Tom Brown Arena Hall

June Speaker Series

The OHS is thrilled to welcome the mother-daughter team of Nancy Jordan and Katrina Blackburn. They will be sharing tips and methods for growing flowers in our region, culminating in the creation of a simple, seasonal bouquet to enhance any occasion.

Nancy and Katrina are the inspirations behind Ganden Gardens Flower Farm & Floral Studio. Their passion for nature and its intricate beauty is evident in their gardening approach and floral designs.

OHS Meeting/Social Time @ 7:00 – 7:30 pm | Talk begins @ 7:30 pm.  See you there!

NOTE:  For those who were unable to attend the meeting – please click on the following (external) link: OHS YouTube Ganden Gardens  

OHS Presents: Summer 2024 Pop-Up Garden Tours Are Here

We invite you to join us as we explore the beauty of nature in our upcoming garden tours. Don’t miss this opportunity to immerse yourself in the vibrant colors and serene landscapes of summer.  As an OHS member, you are welcome to bring a friend, buddy, or loved* one along for the experience.  Please note there are no rain dates for the tours and remember to dress accordingly for the weather, including rain gear should there be wet weather.  We look forward to seeing you there.

Here is summer schedule at a glance:

  • Sunday June 23rd • 1:30-3:30 pm • Garden of Jean & Suzanne Carr
  • Saturday July 6th • Drop-in between 10 am 1 pm • Home garden of Sundaura Alford-Purvis
  • Saturdaty July 13th • Drop-in between 9 am-1 pm • Kilborn Allotment Garden of Rob & Laura B.
  • Sunday July 14 or Saturday July 20th • (Final date/times to be announced in early July) • Daylily Collection Blaine M. & Jamie R.
  • Wednesday August 8th • 6-8 pm • Rosalind Bennett • Rosalinds Garden Blooms
  • Thursday August 15th • 10 am-noon • Forêt Capitale Forest
  • Saturday August 24th • 10 am-noon Kristina Rudnisky An Urban Native Plant Oasis

Click on the member details button for more information.

*please refrain from bringing pets to the garden tours at this time. Thank you.

OHS Great Pollinator Garden Awards Contest

New for 2024!

The OHS is proud to launch its first ever Great Pollinator Garden Awards Contest.  Help celebrate the important work of Ontario’s native pollilnators by planting a pollinator garden.

Pollinators and other insects face many threats these days.  Gardeners can make a big difference by planting native and non-native plants to attract them.  No matter your garden size, whether it is your front lawn, a shared city street scape or a balcony container garden  – you can make a difference.

Nominate yourself or a neighbour using our contest submission form. Participants are to provide details such as a brief description of the garden, a list of native plants, and include up to 3 digital photos.  The deadline is September 15, 2024 (midnight).  Prizes for the top entries will be awarded at the AGM in December 2024.

Please click on the button below for full contest details, criteria and the official submission form.  We look forward to your entries.  Good luck to all participants and happy gardening.

The OHA's 116th Convention - Guelph, Ontario

Registration for the OHA Convention

Early bird registration is now over.  However, if you want to register there’s still time.  See details below. 

Message from the OHA Registrar:

“Join us for the 3-day Ontario Horticultural Association’s Convention and Annual General Meeting from July 12th-14th!

Our adventure to discover “the heartlands of gardens growing and rivers flowing” begins July 12th during our 116th OHA convention hosted by Districts 7 and 8. Our hosts have worked hard to plan an awesome adventure for us, full of delicious meals, fantastic bus trips, exciting guest speakers/seminars and wonderful accommodations…”

Full details and how to register available to OHS members by clicking on the button below.  Register soon!


OHS Spring 2024 Newsletter Has Arrived - The Dibbler!


We are pleased to announce that the OHS Spring Newsletter “The Dibbler” is now available for your reading pleasure. New name but same great content.

Read about: growing orchids, keeping squirrels away from your bulbs, the Ottawa Wildflower Seed Library, gardening resources on the web, plant nomenclature, residential gardening in a city right-of-way, the final chapter in the Cardoon Chronicle, and a historical piece on Richard Warren Oliver who influenced a number of Ottawa gardens in his day.

Fellow dibblers – enjoy and happy gardening!



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)

OHS 2023-2024 Yearbook Now Available


We are pleased to announce the completion of the OHS 2023-2024 Yearbook. This special edition encapsulates two years of programs, events, activities, and competitions. Beyond mere documentation, it stands as a testament to the unwavering commitment of members like you.

Moreover, the yearbook serves as a historical chronicle, preserving our journey and celebrating the OHS community. We extend our heartfelt gratitude to all those who generously shared their expertise and valuable contributions to help produce this document.

Enjoy exploring this captivating publication, available in PDF and Flipbook formats. Members, pls click on button below.

Let its pages transport you through our shared experiences and achievements. Happy reading!

Save the Dates!

OHS 2024 Plant Auction and Sales

Next Event:

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

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

We look forward to seeing you at these events.


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.

Join or renew membershipDonate


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.