Riverdale Horticultural Society
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    • Monthly Meetings
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    • Friends of RHS
    • Annual Flower Show 2023
Riverdale Horticultural Society
  • Home
  • Monthly Meetings
  • FLORAL DESIGN
  • CONTESTS
  • NEWS
  • RHS Past Speakers
  • Friends of RHS
  • Annual Flower Show 2023

Learn more about the first National Tree Day

Tree Canada

 Tree Canada is the only national non-profit organization dedicated to planting and nurturing trees in rural and urban environments, in every province across the country. We help to grow Canada’s tree canopy through our programs, research, and engagement efforts and by offering grants to communities and schools. We are thought-leaders and capacity-builders, collaborating with a network of industry experts, academics, and other non-profits to deepen community knowledge and help municipalities plan and sustain local canopy. Together with our partners and sponsors, we have planted more than 84 million trees. 

Find out more

2022 ANNUAL FLOWER SHOW WINNERS

Best Bloom

Margaret Murphy for her Clematis bloom

Best Arrangement

Heather Sinopoli for her design, "Together We Grow"

Judge's Choice

Dorothy Barrett fpr her habanera peppers

Winners in categories

Jennifer James, Heather Sinopoli, Marion Booth, Margaret Murphy, Chandrea Ramlogan, Doreen Whyte, Eve Cluderay, Dorothy Barrett, Philippe Mesley, Betty Campbell, Jenny Harper, Julia Fenn

Check out the Toronto Garden Contest Winners!

Toronto Residential, Commerical, and Community Gardens

Photos of the five winners and lists of where you can find the winning gardens in each category.

learn more

ABOUT OUR SPEAKERS

Donna Lewis

Paul Gellatly

Paul Gellatly

Donna Lewis is a gardener at a private estate in Aurora of Frank and Elfriede Stronach. In 2005 swans were purchased under the impression that they would scare the Canada geese away. 

Donna completed the Ontario Master Naturalist and Amphibian and Reptile Survey courses, learning what the swans need in a healthy environment. Donna is an advocate and spokesperson for the swans and wetlands they are dependant o

Paul Gellatly

Paul Gellatly

Paul Gellatly

Paul is a life-long horticulturalist who is also known as The Tattooed Gardener! He is affiliated with the Toronto Botanical Gardens as the former Director of Horticulture at the Toronto Zoo and the former Curatorial Gardener managing one of Canada's largest tropical plant collections. Paul has been featured on Podcasts, radio shows, and in print. He was recently featured on the new television documentary series 'Visionary Gardeners'.

Membership Perks

succulent Gardens and Riverdale Horticultural Society

Field Trips

Bulbs & Poinsettias

Bulbs & Poinsettias

Participate in tours of 

horticultural sites

Poinsettia Gardens Riverdale Horticultural Society

Bulbs & Poinsettias

Bulbs & Poinsettias

Bulbs & Poinsettias

Direct access to growers!

Coleus garden riverdale horticultural society toronto

Plant Sales

Bulbs & Poinsettias

Plant Sales

Take part in plant sales at RHS and local clubs.

riverdale horticultural society virtual meetings garden club

Expert Guest Speakers at monthly meetings

Connect with the Ontario Horticultural Association

Connect with the Ontario Horticultural Association

Ontario horticultural association

Connect with the Ontario Horticultural Association

Connect with the Ontario Horticultural Association

Connect with the Ontario Horticultural Association

riverdale horticultural society gardens and gardeners

Volunteers, friendship and community-based

Connect with the Ontario Horticultural Association

Volunteers, friendship and community-based

ABOUT OUR SPEAKERS

Joanna Blanchard

 Joanna Blanchard was introduced to horticulture and gardening almost from birth. Her father was a botany professor and her mother a plant pathologist, so the talk at the dinner table was often about plants! Time moved on and when she married and move from the UK to Canada her passion for gardening flourished. Joanna is a past coordinator of the Toronto Master Gardeners and Co-President of the Leaside Garden Society, and when she has spare time, Joanna also loves to travel and visit beautiful gardens from around the world. We are thrilled to have Joanna share images and stories about her visit to the Gardens of Giverny that inspired the painting of impressionist Claude Monet.  

ABOUT OUR SPEAKERS

Charlie Dobbin

Charlie Dobbin is a well-known horticulturist and landscape designer with professional gardening experience world-wide. In May 2002 Charlie started her own landscape design and horticultural consulting company, ‘Garden Solutions by Charlie Dobbin’. Currently Charlie hosts the Garden Show on AM740 every Saturday at 9am. Her latest TV venture is ‘Healing Gardens’, broadcast on Vision TV, and can be seen at https://www.visiontv.ca/shows/healing-gardens/.When she’s not providing garden advice to clients, Charlie can be seen delivering practical and entertaining gardening tips on a variety of television stations. She has diverse experience including: 18 years in retail Garden Centres, cohosted the HGTV-show ‘One Garden Two Looks’, Horticultural Director for Canada Blooms, The Flower and Garden Festival for 12 years, and volunteer judging for Communities in Bloom – Ontario. 

EARTH DAY 2023

The Ontario Horticultural Society is hosting a webinar that you won't want to miss!

 

As part of Earth Day Celebrations, Garden Ontario is hosting Dr. Michael McTavish and Catherine McGill for a webinar on Friday, April 21st at 7 pm EST

Learn more

EARTH DAY 2023

The Ontario Horticultural Society is hosting a webinar that you won't want to miss!

 

As part of Earth Day Celebrations, Garden Ontario is hosting Dr. Michael McTavish and Catherine McGill for a webinar on Friday, April 21st at 7 pm EST

Learn more

NOV. 8, 2023 - Meeting Format TBA*

Succulent Gardens with Molly

Molly is the plant and nature-obsessed maker behind Canadian Succulents. 

It all started about 5 years ago, when Molly and her sister began collecting succulents. Fascinated by the bright colour variations, symmetry, and resilience of these plants, they began gathering and propagating succulents.   Molly shares that she is "so grateful for the chance to direct all my energy to creating and sharing our succulent designs with our customers, and I hope these plants bring you as much joy and warmth as they bring me."

PHOTO CONTEST THEME: Art in the Garden

FLOWER SHOW CATEGORIES: Lest We Forget,  a Design using Grasses and/or Seed Pods, Potted Plant

(Visit the Floral Design page and download the Monthly Flower Show PDF for details)


*We will announce if the meeting will be Zoom only, in-person only, or a hybrid of Zoom and in-person.

About Us

Nov. 8, 2023

Dec. 13, 2023

Dec. 13, 2023

Succulent Gardening with Molly 

Learn more

Dec. 13, 2023

Dec. 13, 2023

Dec. 13, 2023

Create Your Own Holiday Floral Design

Learn more

January 2024 - Gardens of the Bloomsbury Group

An area of central London where a group of creatives met from 1905 to 1930

This presentation by Duncan and Claudia Wood, a retired couple, with a passion for travel and visiting gardens and markets. They are enthusiastic but amateur gardeners who tend 4 gardens in Toronto: their own shady garden in the Beach, their allotment garden near the Leslie Spit and as volunteers at the Main St. Library and the Beach Community Edible Garden. They were members of the Beach Garden Society for many years and served on the Board for ten years.  

This is a ZOOM ONLY meeting


PHOTO CONTEST THEME: WELCOME WINTER – AN OUTDOOR URN OR PLANTER ARRANGEMENT.


Photo Credit  New York Times, 2017

Check out the gorgeous designs from the December "make and take"

See the many happy faces and designs!

Monthly Gust Speaker

SEPTEMBER 11, 2024

Topic:   Optimists Plant Spring Bulbs 

Speaker:     Michael Erdman


This presentation is about spring-flowering bulbs with a focus on the early dazzlers  like crocus, hyacinths and fritillaries; and the stars of late spring such as camassias and alliums.


Scroll down to learn more about our speaker!


7 p.m - ZOOM ONLY (the Zoom link will be emailed to members. If you are not a member, contact us at info@riverdalehorticultural.ca to learn how to join the meeting as a guest)


PHOTO CONTEST for SEPTEMBER 2024: Native Plant (name the plant). Submission details will be emailed to the members. The photo contest is for members only. To learn about how to become a member, contact us at info@riverdalehorticultural.ca


MONTHLY FLOWER SHOW CATEGORIES FOR SEPTEMBER 2024

1. Withrow Park - a single cut flower

2. Hillside Gardens - vase of mixed flowers, 3 or more varieties, may contain their own foliage

3. Herbie's Herbs - 3 or more cut herbs, named, displayed in water

4. Tomato - cluster of small fruited tomatoes

5. A tomato - not small fruited, with calyx

6. Any other vegetable(s)


GUESTS & NEW MEMBERS ARE WELCOME! We will be holding meetings in a variety of formats including Zoom only, in-person only, or hybrid meetings (over Zoom and in-person) for the safety and comfort of our members. To participate, email us at info@riverdalehorticultural.ca


September 11, 2024- Building Diversity with Native Plants (a

Presented by Paul LaPorte

Paul LaPorte is the owner of Ephemeral Ark Nursery (specializing in native woodland species) and consultant on ecological gardening and design. Living in the Greenbelt of the GTA, he has taken the opportunity to steward and study numerous native plant communities within multiple ecotypes and varied microclimates. Paul maintains a strong knowledge of Ontario native plant species and their communities and fosters them in his own gardens. He is the current chair of the Ontario Native Plant Growers Association, a past member of Kawartha Conservation's BlueScape Steering Committee, the past President of the North American Native Plant Society and the past Vice Chair of the Scugog Environmental Advisory Committee. He has had the pleasure of presenting for numerous organizations on the importance of native plants to our ecology. 


PHOTO CONTEST AND FLOWER SHOW CATEGORIES BELOW!


GUESTS & NEW MEMBERS ARE WELCOME! We will be holding meetings in a variety of formats including Zoom only, in-person only, or hybrid meetings (over Zoom and in-person) for the safety and comfort of our members. To participate as a guest, email us at info@riverdalehorticultural.ca  by 12:00 pm the day of a presentation.

SEPTEMBER 10, 2025

Growing Garlic with Shawn Stevens - HYBRID meeting in-person and Zoom

 Shawn Stevens is the head farmer at Good Day Garlic, where he and his son—proudly known as the (CGO) Chief Garlic Officer—grow a wide range of organic garlic varieties with care and dedication. Rooted in a deep respect for nature, Shawn also brings his passion for sustainability into the classroom as an elementary school educator. He teaches students about indoor and outdoor growing techniques, water conservation, food security, and the importance of Indigenous practices in agriculture. Located in Sutton, Ontario—just an hour north of Toronto—Good Day Garlic is more than a farm; it’s a community-driven effort to cultivate healthy food and inspire the next generation of growers.


PHOTO CONTEST: Truth and Reconciliation


FLOWER SHOW CATEGORIES:

1 entry per class, up to a total of 3 entries

1. A vase of fall flowers, 3 or more varieties, may contain their own foliage

2. 3 kinds of grasses in a vase

3. A sample of homegrown fruits and/or vegetables displayed on a plate

4. A design showing movement

(Visit the Floral Design page and download the Monthly Flower Show PDF for details)

Copyright © 2025 Riverdale Horticultural - All Rights Reserved.

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