Canada's Plant Hardiness Site
Data have been entered for 7138 species.
(Last updated Wed Jan 14 11:46:39 EST 2015)
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Maackia amurensis Amur maackia
Macbridea caroliniana
Macleaya cordata tree celandine
Maclura pomifera osage orange
Macranthera flammea
Madia glomerata clustered tarweed
Magnolia 'Ann' hybrid magnolia
Magnolia 'Ricki' hybrid magnolia
Magnolia 'Susan' hybrid magnolia
Magnolia acuminata cucumber tree
Magnolia ashei Ashe's magnolia
Magnolia denudata yulan magnolia
Magnolia fraseri mountain magnolia
Magnolia grandiflora southern magnolia
Magnolia kobus Kobus magnolia
Magnolia liliiflora tulip magnolia
Magnolia macrophylla umbrella tree
Magnolia obovata Japanese bigleaf magnolia
Magnolia officinalis Houpu magnolia
Magnolia pyramidata
Magnolia salicifolia Japanese willowleaf magnolia
Magnolia sieboldii Siebold's magnolia
Magnolia stellata star magnolia
Magnolia tripetala umbrella magnolia
Magnolia virginiana sweetbay magnolia
Magnolia X'Butterfly' cucumber magnolia
Magnolia X'Elizabeth' cucumber-tree magnolia
Magnolia X'Galaxy' galaxy magnolia
Magnolia Xloebneri loebner magnolia
Magnolia Xsoulangeana Chinese magnolia
Maianthemum canadense wild lily-of-the-valley
Maianthemum canadense subsp. interius wild lily-of-the-valley
Maianthemum dilatatum twoleaf false Solomon's
Maianthemum racemosum large false Solomon's seal
Maianthemum racemosum subsp. racemosum large false Solomon's seal
Maianthemum stellatum starry false Solomon's seal
Maianthemum trifolium threeleaf false Solomon's seal
Malaxis bayardii
Malaxis monophyllos white addersmouth
Malaxis monophyllos var. brachypoda white addersmouth
Malaxis paludosa marsh malaxis
Malaxis unifolia green addersmouth
Malus applecrab hybrids applecrab
Malus baccata Siberian crabapple
Malus coronaria sweet crab apple
Malus floribunda showy crab apple
Malus fusca Oregon crab apple
Malus ioensis Iowa crab
Malus prunifolia
Malus pumila sweet apple
Malus rockii Himalayan crab apple
Malus sargentii Sargent's crabapple
Malus sylvestris wild crabapple
Malus Xadstringens flowering crab apple
Malus Xdomestica common apple
Malus Xpurpurea purple crabapple
Malus zumi zumi apple
Malva arborea velvet tree mallow
Malva moschata muskmallow
Malva neglecta dwarf mallow
Malva sylvestris high mallow
Malva verticillata whorled mallow
Malvastrum hispidum hispid false-mallow
Manfreda virginica Virginia agave
Mariosousa millefolia milfoil wattle
Marrubium vulgare white horehound
Marshallia grandiflora Monongahela Barbara's buttons
Marshallia mohrii Mohr's Barbara's buttons
Marshallia trinervia broadleaf Barbara's buttons
Marsilea quadrifolia European water-clover
Marsilea vestita hairy water-clover
Matelea carolinensis maroon Carolina milkvine
Matelea obliqua oblique milkvine
Matricaria chamomilla wild chamomile
Matricaria discoidea rayless chamomile
Matteuccia struthiopteris ostrich fern
Matteuccia struthiopteris var. pensylvanica ostrich fern
Matthiola incana common stock
Meconella oregana white fairypoppy
Meconopsis baileyi betonyleaf meconopsis
Meconopsis cambrica Welsh poppy
Medeola virginiana wild cucumber-root
Medicago arabica
Medicago falcata yellow-flowered alfalfa
Medicago lupulina black medic
Medicago orbicularis
Medicago polymorpha
Medicago sativa lucerne
Medicago sativa subsp. sativa
Medicago sativa subsp. varia sand lucerne
Melaleuca quinquenervia punktree
Melampyrum lineare cowwheat
Melampyrum lineare var. latifolium cow-wheat
Melia azedarach chinaberry
Melianthus major Cape honeyflower
Melica bulbosa western oniongrass
Melica nitens
Melica smithii Smith's melic grass
Melica spectabilis purple oniongrass
Melica subulata Alaskan oniongrass
Melilotus albus white melilot
Melilotus altissimus
Melilotus officinalis medicinal sweetclover
Melissa officinalis lemon balm
Menispermum canadense Canada moonseed
Mentha arvensis field mint
Mentha spicata spearmint
Mentha suaveolens variegated pineapplemint
Mentha Xgentilis
Mentha Xpiperita peppermint
Mentha Xvillosa
Mentzelia albicaulis white-stemmed blazing star
Mentzelia decapetala mentzélie à dix pétales
Mentzelia dispersa bushy blazing star
Menyanthes trifoliata bogbean
Menziesia ferruginea false azalea
Mertensia drummondii Drummond's lungwort
Mertensia lanceolata prairie bluebells
Mertensia longiflora longflowered lungwort
Mertensia maritima sea lungwort
Mertensia paniculata tall lungwort
Mertensia paniculata var. eastwoodiae Eastwood's bluebells
Mertensia virginica Virginia bluebells
Mespilus germanica medlar
Metasequoia glyptostroboides dawn redwood
Micranthes davurica Dahurian Alps saxifrage
Micranthes ferruginea russethair saxifrage
Micranthes foliolosa leafy saxifrage
Micranthes gaspensis alpine saxifrage
Micranthes lyallii var. hultenii Hultén's saxifrage
Micranthes nelsoniana var. porsildiana Porsild's saxifrage
Micranthes nidifica var. nidifica peak saxifrage
Micranthes occidentalis western saxifrage
Micranthes odontoloma streambank saxifrage
Micranthes oregana bog saxifrage
Micranthes pensylvanica eastern swamp saxifrage
Micranthes rufidula reddish saxifrage
Micranthes virginiensis Virginia saxifrage
Microbiota decussata Russian arborvitae
Microseris bigelovii coast microseris
Microseris borealis northern microseris
Microseris howellii Howell’s silverpuffs
Microseris laciniata subsp. detlingii Detling's silverpuffs
Microseris nutans nodding microseris
Microthlaspi perfoliatum thoroughwort pennycress
Mikania cordifolia Florida Keys hempvine
Mikania scandens climbing hempweed
Milium effusum tall millet grass
Milium effusum var. cisatlanticum wood millet
Mimulus alatus sharpwinged monkeyflower
Mimulus ringens Allegheny monkeyflower
Mimulus ringens var. colpophilus estuarine monkeyflower
Mimulus ringens var. ringens Allegheny monkeyflower
Minuartia biflora mountain stitchwort
Minuartia cumberlandensis
Minuartia dawsonensis Dawson's sandwort
Minuartia elegans elegant stitchwort
Minuartia glabra
Minuartia groenlandica mountain sandwort
Minuartia marcescens serpentine stitchwort
Minuartia michauxii rock sandwort
Minuartia obtusiloba twinflower stitchwort
Minuartia rossii Ross' stitchwort
Minuartia rubella reddish sandwort
Minuartia stricta bog stitchwort
Minuartia uniflora
Minuartia yukonensis Yukon stitchwort
Mirabilis albida hairy umbrella-wort
Mirabilis linearis
Mirabilis nyctaginea wild four-o'clock
Miscanthus 'Purpurascens' flame grass
Miscanthus sacchariflorus silver plume grass
Miscanthus sinensis Chinese silvergrass
Misopates orontium linearleaf snapdragon
Mitchella repens partridgeberry
Mitella breweri feathery bishop's-cap
Mitella diphylla twoleaf bishop's-cap
Mitella nuda naked mitrewort
Mitella pentandra fivestamen bishop's-cap
Mitella trifida threetooth bishop's-cap
Moehringia lateriflora bluntleaf sandwort
Moehringia macrophylla largeleaf sandwort
Molinia caerulea dwarf moorgrass
Molinia caerulea subsp.arundinacea tall moor grass
Mollugo verticillata green carpetweed
Monarda didyma bergamot
Monarda fistulosa wild bergamot
Monarda fistulosa var. fistulosa
Monarda punctata horsemint
Monarda punctata var. villicaulis
Monarda Xdidyma Hybrids hybrid beebalm
Monardella odoratissima
Moneses uniflora oneflower wintergreen
Monolepis nuttalliana Nuttall's povertyweed
Monolopia congdonii San Joaquin woollythread
Monotropa uniflora ghostflower
Monotropsis odorata
Montia bostockii Bostock's montia
Montia chamissoi Chamisso's montia
Montia diffusa branching montia
Montia fontana water blinks
Montia howellii Howell's montia
Montia linearis narrowleaf montia
Montia parvifolia small-leaf montia
Morella cerifera southern waxmyrtle
Morella heterophylla Carolina bayberry
Morella inodora scentless bayberry
Morella pensylvanica northern bayberry
Morus alba common mulberry
Morus australis wild Korean mulberry
Morus rubra red mulberry
Muhlenbergia asperifolia roughleaf dropseed
Muhlenbergia cuspidata plains muhly
Muhlenbergia filiformis pull-up muhly
Muhlenbergia frondosa wirestem muhly
Muhlenbergia glomerata marsh muhly
Muhlenbergia mexicana wirestem muhly
Muhlenbergia mexicana subsp. filiformis Mexican satingrass
Muhlenbergia mexicana subsp. mexicana Mexican muhly
Muhlenbergia racemosa marsh muhly
Muhlenbergia richardsonis Richardson’s satingrass
Muhlenbergia schreberi nimblewill
Muhlenbergia sobolifera rock muhly
Muhlenbergia tenuiflora slimflowered muhly
Muhlenbergia torreyana
Muhlenbergia uniflora bog muhly
Mukdenia rossii mapleleaf tickfoil
Mulgedium pulchellum blue lettuce
Munroa squarrosa Munro's grass
Musa basjoo hardy banana
Muscari armeniacum Armenian grape hyacinth
Muscari azureum azure grape hyacinth
Muscari botryoides common grape hyacinth
Muscari comosum tassel grape hyacinth
Muscari latifolium bicolor grape hyacinth
Mycelis muralis wall lettuce
Myosotis arvensis field forget-me-not
Myosotis asiatica Asian forget-me-not
Myosotis laxa small forget-me-not
Myosotis scorpioides water forget-me-not
Myosotis stricta blue scorpion grass
Myosotis sylvatica garden forget-me-not
Myosotis verna spring forget-me-not
Myosoton aquaticum water chickweed
Myosurus apetalus var. borealis awned mousetail
Myosurus apetalus var. montanus bristly mousetail
Myosurus minimus tiny mousetail
Myrica gale sweet gale
Myriophyllum alterniflorum alternateflower watermilfoil
Myriophyllum farwellii Farwell's watermilfoil
Myriophyllum heterophyllum variable-leaf watermilfoil
Myriophyllum hippuroides western watermilfoil
Myriophyllum humile low watermilfoil
Myriophyllum laxum lax watermilfoil
Myriophyllum pinnatum cutleaf watermilfoil
Myriophyllum quitense waterwort watermilfoil
Myriophyllum sibiricum Siberian watermilfoil
Myriophyllum spicatum Eurasian watermilfoil
Myriophyllum tenellum slender watermilfoil
Myriophyllum ussuriense Russian watermilfoil
Myriophyllum verticillatum whorled watermilfoil
Myrrhis odorata myrrh
Myrtus communis myrtle