This is a link to Prohibited Invasive Species in Ontario, not listed here because illegal and presumed not commercially available.

This is a link to Plant Me Instead, published by the Ontario Invasive Plant Council, which offers alternatives.

Below is a list of invasive, non-native plants that are sold by garden centres despite their negative impact on the environment. Do NOT BUY! The ones marked with an asterisk are the most aggressive.

Acer platanoides* Norway Maple

Acer ginnala Amur Maple

Aegopodium podagraria* Bishop's Goutweed

Aesculus hippocastanum Horse-chestnut

Ajuga reptans* Creeping Bugleweed

Berberis thunbergii Japanese Barberry

Betula pendula* European Birch

Butomus umbellatus Flowering Rush

Cabomba caroliniana Fanwort

Campanula rapunculoides Creeping Bellflower

Celastrus orbiculatus* Oriental Bittersweet

Convallaria majalis* Lily-of-the-Valley

Coronilla varia* Crown Vetch

Eichhornia crassipes Water Hyacinth

Elaeagnus umbellata* Autumn Olive

Elaeagnus angustifolia Russian Olive

Euonymus alata Winged Euonymus

Euonymus europaeus Spindle-tree

Euonymus fortunei Wintercreeper

Euphorbia cyparissias Cypress spurge

Frangula alnus* Glossy Buckthorn

Impatiens glandulifera* Himalayan Balsam

Iris pseudacorus Yellow Iris

Galium mollugo White Bedstraw

Hedera helix* English ivy

Hemorocallis fulva Orange Daylily

Hippophae rhamnoides Common Sea Buckthorn

Hydrocharis morsus-ranae European Frog-bit

Lamiastrum galeobdolon Yellow Archangel

Lonicera × bella Bell's Honeysuckle

Lonicera japonica* Japanese Honeysuckle

Lonicera maackii Amur Honeysuckle

Lonicera morrowii Morrow's Honeysuckle

Lonicera tatarica* Tartarian Honeysuckle

Lycopus europaeus* European Bugleweed

Lysimachia nummulariaCreeping Jenny, Moneywort

Miscanthus sinensis Chinese Silver Grass, Zebra Grass

Miscanthus sacchariflorus Amur Silvergrass

Morus alba* White Mulberry

Nymphoides peltata Yellow Floating Heart

Pachysandra terminalis Japanese spurge

Pinus sylvestris Scots Pine

Pistia stratiotes Water Lettuce

Populus alba White Poplar

Rhamnus cathartica Common Buckthorn

Robinia pseudo-acacia Black locust

Rosa multiflora* Multiflora rose

Scilla siberica Scilla

Sedum acre Mossy stonecrop

Salix alba White Willow

Salix x rubens Hybrid Willow

Syringa vulgaris Common Lilac

Viburnum opulus Guilder Rose, European Cranberry

Vinca minor Common Periwinkle

Viola odorata Sweet violet