Plant Hardiness Zones in Southern Ontario

Animal Pest Issues -An Informed Approach

Canadian Seed Catalogue Index from Seeds of Diversity

Master Gardeners Advice Table

Plant Diagnostic - Seedlings

Plant Diagnostic - Pests & Diseases

Starting Seeds Indoors

Starting Seeds Outdoors

Starting Perennials from Seed

Gardening Know How

Goutweed (Aegopodium podagraria)
Japanese Knotweed (Fallopia japonica)
Autumn Olive
Black Locust
Buckthorn
Dog-strangling Vine
Erect Hedge-parsley
Eurasian Water-milfoil
European Black Alder
European Frog-bit
Flowering Rush
Invasive Honeysuckles
Garlic Mustard
Giant Hogweed
Multiflora Rose
Norway Maple
Phragmites
Purple Loosestrife
Reed Canary Grass
Scots Pine
Spotted Knapweed
White Mulberry
White Sweet Clover
Wild Parsnip

Invasive Plants & Animals in Ontario

Animals:

Invasive Jumping Worms – Information for Home Gardeners
Japanese Beetles (Popillia japonica) Fact Sheet

Grow Me Instead (For Southern Ontario)

Plants:

Plant Hardiness Zones of Southern Ontario

Japanese Beetle (Popillia joponica)

Giant hogweed
(Heracleum mantegazzianum)

 

Waterloo Region Master Gardeners

Updated 2026