Master Gardeners of Ontario Inc.

Motivating and Inspiring Gardeners in Ontario


Lorraine Johnson on Tending the Earth



Featuring Guest Speaker, Author & Avid Gardener


“Tending the Earth - How Our Gardens Can Change the World”

Thursday, September 27, 2018

Cost: $10

Note: Due to Limited Seating Registration is Required

Where: King Street Community Church, 611 King St. West, Oshawa, Ontario (see map)

Time: 6:30 pm to 9:00 pm

Information: Book Signing, Refreshments, Vendors, Displays and Door Prizes

Garden Days - Register Your Activity

Garden Days

Saturday, June 16 to Sunday, June 24

The Annual Celebration of Canada’s Garden Culture

Garden Days is Canada’s country-wide celebration of the vital role of gardens and gardening in our communities and in our lives. National Garden Day is Saturday, June 16, the opening day of Garden Days 2018. This nine-day program of activities and events is for gardening enthusiasts, families, schools and tourists alike. Garden Days is an opportunity for Canadians to enjoy their own garden, visit or take part in their favourite garden experience, get inspired at their local garden centre or travel to a nearby destination to enjoy their favourite garden.

Register Your Activity

All Canadian gardens, garden centres, horticultural and plant societies, garden clubs, schools, garden-related businesses and communities are invited to organize Garden Days activities or events – between June 16 and 24 – to celebrate public gardens and home gardening. We invite you to start planning your 2018 Garden Days activity and register it on the site below, at no charge.

Guelph-Wellington Master Gardeners Plant Sale

MG Plant Sale 2018 Poster

ORG & HPS Annual Super Plant Sale

Ontario Rock Garden and Hardy Plant Society

Major fund-raiser for the year will be held at Toronto Botanical Garden on May 6, 11 a.m - 2 p.m. You can be sure of finding a great selection of hard-to-source rock garden plants, large, healthy perennials and specialty items for urban gardens.

more information


Peterborough Garden Show 2018

2018 Peterborough Garden Show

Guelph-Wellington A Day in the Garden

A Day in the Garden

A Day for Gardeners

2018 peterborough poster

Master Gardeners in a Class of Their Own

Master Gardener

by Mark and Ben Cullen - Toronto Star, November 11, 2017

When it comes to cultivating passion, energy and talent, Canada’s Master Gardeners are standouts.

Master Gardeners are dedicated to the art and science of gardening. And, with their generosity of knowledge and time — on public garden tours, at local horticulture societies, at small shows and big ones such as Canada Blooms and in various online forums — they help sustain a broader community of Canadian gardeners...

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Technical Update: Toronto MG's & Toronto Botanical

Growing Food from Around the World

Date: Saturday, January 13, 2018

Speakers for the day include:
Dena Jackson Toronto comedian & MC A Light-hearted Look at Growing Food from Around the World

Conrad Richter President of Richters Herbs Welcoming Migrant Herbs to our Gardens

Viliam Zvalo research scientist, Vineland Research Station New Plants in Familiar Places...the Science

Ken Brown horticulturist, writer & home gardener Down to Earth Solutions for Growing Unusual Edibles

more information

Canada's National Flower - Bunchberry

national flower winnner

The votes are in! Canadians have spoken!

A nation-wide contest to celebrate Canada’s 150th anniversary, sponsored by Master Gardeners of Ontario, has embraced the bunchberry, known as quatre–temps in French and kawiscowimin in Cree, as the winner.

Since the beginning of the National Flower Contest, the little white flower has held the lead with an average of 80 per cent of the on-line vote. Since it was announced in March, almost 10,000 Canadians took up the challenge to help select our national flower.

Master Gardeners of Ontario will submit an online petition to Parliament to have the winner declared Canada’s official National Flower, says Maureen Hulbert who spearheaded the project: "We all love to celebrate the wildness of Canada and its varied areas and having something that can actually grow in every part of the country pulls us together". (photo credit Todd Boland)

Sign the Petition

Wild Parsnip - How to Identify

Wild Parsnip

Can you identify Wild Parsnip?

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St. Marys Garden Fair - June 3rd

Garden Fair

Celebrating the 20th year for this amazing event! Enjoy a wide variety of garden related vendors in an outdoor park setting. Discover everything from hanging baskets to birdhouses, unique perennials, annuals, shrubs & interesting garden décor. Our very popular heirloom tomatoes will be for sale, grown by our Horticultural members. Free admission, refreshments on site and lots of free parking.

Date: June 3, 2017 -- 8:30 a.m. to 1 p.m.

Location: Milt Dunnell Field (The Flats) – Water St. North St.Marys, ON

Contact Name: Ron Hunter

Contact Phone # 519-284-2382

Contact email address:

Vote for Canada's National Flower

3 flowers plus banner

Read about the three 'nominees' and then vote using the Survey Monkey link:

What’s the National Flower of Canada?

We have an official tree - the maple, but we do NOT have an official flower! Master Gardeners of Ontario thinks Canada’s 150th birthday is the perfect time to launch a campaign to get one!

Toronto Master Gardeners with help from Todd Boland, Research Horticulturist at Memorial University of Newfoundland, came up with the following three choices for a pan-Canadian flower - one that appears in every province and territory but is not already a provincial or territorial emblem:

Hooded Ladies Tresses (Spiranthes romanzoffiana)
· Unique spiraling flower spike marks this genus
· Found in open wet areas – meadows, bogs, marshes
· Fragrant flowers from July to Sept on 10 to 50 cm stems
· Food source for native bumblebees all through summer

Twinflower (Linnaea borealis)
· Delicate but tough! “borealis” – of the north
· Found in forests, wetlands all over Canada
· Reproduces mainly by spreading stolons
· Fragrant flowers on 15 cm stems for one week in June, attract native bees
· Winter forage for caribou

Bunchberry (Cornus canadensis)
· Changes with the seasons - just like Canada!
· White flowers in spring, red berries in summer, great red-purple fall colour
· Very common in forests and wetlands all over Canada
· Creeping form, 10 to 20 cm tall, great as a native groundcover
· Pollinators include native bumblebees and solitary bees
· Berries are food source for small and large mammals, migratory birds
· Winter forage source for caribou, moose, elk, deer

Voting will close at midnight on June 30th, 2017

Vote now-it only takes a few seconds using this Survey Monkey link:

Technical Update Toronto MGs

Gardening Without Chemicals

Saturday, January 7, 2017 8:30 am - 4:00 pm

Keynote Speaker: Mark Cullen

more information

registration form