General
Ecological Restoration (Credit Valley Conservation)
Flower Database (when to plant info.)
Gardening Database (within categories)
Map of Nurseries in Ontario (compiled by Halton Master Gardeners)
Missouri Botanical Gardens Plant Finder
Online Gardener's Handbook 2010 (OMAFRA)
Plant Hardiness Zones .pdf file (Government of Canada 2014)
Plant Library (Connon Nursery)
USDA Plant Database (searchable by plant name or state/province)
Gardening Fact Sheets
These fact sheets were developed to support the gardening public on our Master Gardeners of Ontario Facebook Group.
Animal Pest Issues - An Informed Approach
On Making Homemade Insecticidal Soap
Gardening in Northern Ontario
Grow Me Instead Booklet (Northern Ontario)
Gardens for Pollinators and Birds
Bee City Resources (Bee City Canada)
Bee Friendly Garden (David Suzuki)
Beneficial Insects (Credit Valley Conservation)
Bird Gardens (Credit Valley Conservation)
Butterfly Gardens (Credit Valley Conservation)
Butterfly Larval Host Plant List (Penn State)
The Butterflies of Ontario (Ontario Butterflies)
Garden Habitat Certification (Canadian Wildlife Federation)
Halton Region Butterfly and Host Plant List (.pdf)
Larval Shrubs and Trees (Bee Sweet)
Native Butterfly Host and Nectar Plants (Carolinian Canada)
Pollinator Health (OMAFRA)
Planning your Butterfly Garden (Halton Master Gardeners)
Government of Ontario
Ontario Ministry of Agriculture and Rural Affairs
ONFruit (Timely updates for commercial growers useful to home gardeners)
ONVegetables (Timely updates for commercial growers useful to home gardeners)
Invasive Plants and Weeds
9 INVASIVE SHRUBS TO AVOID IN THE LANDSCAPE
Canadian Coalition for Invasive Plant Regulation
Grow Me Instead Booklet (Southern Ontario)
Grow Me Instead Booklet (Northern Ontario)
Choisis-moi plutôt (Grow Me Instead booklet en français)
Invasive Knotweeds - Information and Control
Ontario Invasive Plants Council
Ontario Weeds (OMAFRA)
MG Blogs
Halton Master Gardeners
Follow this great blog with timely insights into things gardening.
Peterborough & Area MGs Latest Posts
Great selection of gardening posts with pertinent information for enthusiasts and those interested in climate and the environment. Their tag line is “sharing gardening knowledge with our community” and this blog is doing that very well. A must follow.
Toronto Gardens
Master Gardener Helen Battersby and sister Sarah Battersby come from long lines of English gardeners. Both gardeners blog on Toronto gardens, but poke their green noses into growing spaces all over the city. Real gardens, real people.
MG Education
MGOI Affiliated
Dalhousie University
Resources
Niagara Parks School of Horticulture
Native Plants
Biodiversity Identification Sheets
Native Plant Database (Missouri)
Native Plant Encyclopedia (CWF)
Native Plant List for Breeding Birds (CVC)
Native Plant List for Migrating Birds (CVC)
Native Plant Seed & Nursery List (CVC)
Native Plants for Butterflies and Moths
Native Plants for a Septic/Drain Field
Native Plants for Pollinators (CVC)
Native Plants that Grow Under Pines
Native Prairie and Meadow Gardens (CVC)
Native Woodlands Gardens for Homes (CVC)
Prairie & Meadow Plants for Landscaping (CVC)
Rain Garden Plants for Pollinators
Woodland Plants for Landscaping (CVC)
Top Plant Picks for your LID Garden (Low Impact Development) (CVC)
Pests & Diseases
Plant Care
Caring for Your New Tree or Shrub (Credit Valley Conservation)
Healthy Lawns (Landscape Ontario)
Lawn Care (OMAFRA)
Rain Gardens
Complete Guide to Building and Maintaining a Rain Garden (Toronto Region Conservation)
Rain Gardens (Credit Valley Conservation)
Rainwater Harvesting (Credit Valley Conservation)
Seeds
Hawthorne Farm Organic Seeds in Palmerston ON
Matchbook Garden & Seed Company in Caledonia ON
Stokes Seeds in Thorold ON
Urban Harvest in Toronto ON
Veseys Seeds in PEI
Wildflower Farms in Coldwater ON
William Dam Seeds in Dundas, ON