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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Radiola linoides tiny allseed
Ranunculus abortivus smallflower crowfoot
Ranunculus acris meadow buttercup
Ranunculus alismifolius plantainleaf buttercup
Ranunculus allenii Allen's buttercup
Ranunculus ambigens
Ranunculus aquatilis white watercrowfoot
Ranunculus aquatilis var. aquatilis leafy waterbuttercup
Ranunculus aquatilis var. diffusus white watercrowfoot
Ranunculus arcticus northern buttercup
Ranunculus arcticus northern buttercup
Ranunculus auricomus
Ranunculus bulbosus yellow weed
Ranunculus californicus California buttercup
Ranunculus cardiophyllus heartleaf buttercup
Ranunculus eschscholtzii Eschscholtz's buttercup
Ranunculus fascicularis early butercup
Ranunculus flabellaris yellow waterbuttercup
Ranunculus flammula lesser spearwort
Ranunculus flammula var. flammula lesser buttercup
Ranunculus flammula var. ovalis ovalleaf creeping spearwort
Ranunculus flammula var. reptans creeping spearwort
Ranunculus gelidus alpine buttercup
Ranunculus glaberrimus sagebrush buttercup
Ranunculus gmelinii Gmelin's watercrowfoot
Ranunculus gramineus grassleaf buttercup
Ranunculus hebecarpus
Ranunculus hederaceus ivyleaf buttercup
Ranunculus hispidus bristly buttercup
Ranunculus hispidus var. caricetorum northern swamp buttercup
Ranunculus hispidus var. hispidus bristly buttercup
Ranunculus hispidus var. nitidus bristly buttercup
Ranunculus hyperboreus high arctic buttercup
Ranunculus inamoenus unlovely buttercup
Ranunculus macounii Macoun's buttercup
Ranunculus micranthus
Ranunculus nivalis snowy buttercup
Ranunculus occidentalis var. brevistylis western field buttercup
Ranunculus orthorhynchus birdsfoot buttercup
Ranunculus pedatifidus
Ranunculus pedatifidus var. affinis
Ranunculus pensylvanicus bristly buttercup
Ranunculus pygmaeus dwarf buttercup
Ranunculus recurvatus hooked crowfoot
Ranunculus recurvatus var. recurvatus hooked crowfoot
Ranunculus repens gold-balls
Ranunculus rhomboideus prairie buttercup
Ranunculus sardous hairy buttercup
Ranunculus sceleratus blister buttercup
Ranunculus sceleratus var. multifidus blister buttercup
Ranunculus sceleratus var. sceleratus cursed crowfoot
Ranunculus turneri Turner's buttercup
Ranunculus uncinatus little buttercup
Raphanus raphanistrum jointed charlock
Raphanus sativus small radish (var. sativus)
Ratibida columnifera prairie coneflower
Ratibida pinnata Mexican hat plant
Rehmannia elata Beverly bells
Reseda alba white mignonette
Rhamnus alnifolia alderleaf buckthorn
Rhamnus cathartica common buckthorn
Rhamnus davurica Dahurian buckthorn
Rhamnus saxatilis rock buckthorn
Rhapidophyllum hystrix needle palm
Rhaponticum repens Russian knapweed
Rheum palmatum East Indian rhubarb
Rheum rhabarbarum wild rhubarb
Rheum Xhybridum common edible rhubarb
Rhexia aristosa awlpetal meadowbeauty
Rhexia salicifolia panhandle meadowbeauty
Rhexia virginica Virginia meadowbeauty
Rhinanthus minor yellow rattle
Rhinanthus minor subsp. groenlandicus arctic yellowrattle
Rhinanthus minor subsp. minor common yellowrattle
Rhodiola integrifolia subsp. integrifolia western roseroot
Rhodiola rosea orpin rose
Rhododendron Elepidote Hybrids elepidote hybrid rhododendron
Rhododendron Exbury Hybrids Exbury hybrid azalea
Rhododendron Knap Hill Hybrids Knap Hill hybrid azalea
Rhododendron Lepidote Hybrids lepidote hybrid rhododendron
Rhododendron Northern Lights Series Northern Lights azalea
Rhododendron P.J.M. Hybrids P.J.M. rhododenron
Rhododendron Yakushimanum Hybrids Yakushimanum hybrid rhododendron
Rhododendron alabamense Alabama azalea
Rhododendron albiflorum whiteflower rhododendron
Rhododendron arborescens sweet azalea
Rhododendron atlanticum coast azalea
Rhododendron austrinum Florida azalea
Rhododendron calendulaceum flame azalea
Rhododendron canadense Canada rhododendron
Rhododendron canescens piedmont pinxterbloom
Rhododendron catawbiense Catawba rhododendron
Rhododendron cumberlandense Cumberland azalea
Rhododendron dauricum Dahurian rhododendron
Rhododendron degronianum Metternich's rhododendron
Rhododendron degronianum subsp. yakushimanum Yakushima rhododendron
Rhododendron eastmanii May white azalea
Rhododendron fastigiatum autumnpurple rhododendron
Rhododendron ferrugineum alpenrose
Rhododendron flammeum Oconee azalea
Rhododendron groenlandicum common Labrador tea
Rhododendron impeditum dwarf purple rhododendron
Rhododendron keiskei Keisk rhododendron
Rhododendron kiusianum Kyushu azalea
Rhododendron lapponicum Lapland rosebay
Rhododendron luteum common yellow azalea
Rhododendron macrophyllum Pacific rhododendron
Rhododendron maximum great laurel
Rhododendron minus piedmont rhododendron
Rhododendron minus var. minus Carolina rhododendron
Rhododendron molle Chinese azalea
Rhododendron molle subsp. japonicum Japanese azalea
Rhododendron mucronulatum Korean rhododendron
Rhododendron occidentale western azalea
Rhododendron periclymenoides pinxterbloom azalea
Rhododendron prinophyllum roseshell azalea
Rhododendron prunifolium plumleaf azalea
Rhododendron racemosum racemed evergreen rhododendron
Rhododendron schlippenbachii royal azalea
Rhododendron smirnowii Smirnow rhododendron
Rhododendron tomentosum northern Labrador tea
Rhododendron vaseyi pinkshell azalea
Rhododendron viscosum swamp azalea
Rhododendron Xbakeri Baker's azalea
Rhododendron Xcolumbianum Columbia rhododendron
Rhododendron yedoense Yodogawa azalea
Rhododendron yedoense var. poukhanense Korean azalea
Rhodohypoxis baurii red star
Rhodotypos scandens jetbead bush
Rhus aromatica skunkbush
Rhus aromatica var. aromatica fragrant sumac
Rhus chinensis Chinese sumac
Rhus copallinum winged sumac
Rhus glabra scarlet sumac
Rhus typhina staghorn sumac
Rhynchospora alba white beakrush
Rhynchospora capillacea needle beakrush
Rhynchospora capitellata brownish beakrush
Rhynchospora floridensis
Rhynchospora fusca brown beakrush
Rhynchospora inundata
Rhynchospora knieskernii
Rhynchospora macra
Rhynchospora macrostachya
Rhynchospora nitens
Rhynchospora pallida
Rhynchospora recognita
Rhynchospora scirpoides
Rhynchospora stenophylla
Rhynchospora tracyi
Rhytidiadelphus triquetrus shaggy moss
Ribes acerifolium mapleleaf currant
Ribes alpinum alpine currant
Ribes americanum wild black currant
Ribes aureum golden currant
Ribes aureum var. villosum buffalo currant
Ribes bracteosum stink currant
Ribes cereum wax currant
Ribes cereum var. cereum wax currant
Ribes cynosbati eastern prickly gooseberry
Ribes diacanthum Siberian currant
Ribes divaricatum coastal black gooseberry
Ribes glandulosum skunk currant
Ribes hirtellum swamp gooseberry
Ribes hudsonianum northern black currant
Ribes hudsonianum var. petiolare western black currant
Ribes inerme whitestem gooseberry
Ribes lacustre bristly black currant
Ribes laxiflorum trailing black currant
Ribes lobbii gummy gooseberry
Ribes missouriense Missouri gooseberry
Ribes montigenum mountain gooseberry
Ribes nigrum European black currant
Ribes oxyacanthoides Canada gooseberry
Ribes oxyacanthoides var. cognatum Umatilla gooseberry
Ribes oxyacanthoides var. irriguum Idaho gooseberry
Ribes oxyacanthoides var. oxyacanthoides Canada gooseberry
Ribes oxyacanthoides var. setosum rock gooseberry
Ribes rotundifolium roundleaf gooseberry
Ribes rubrum European red currant
Ribes sanguineum redflower currant
Ribes triste swamp red currant
Ribes uva-crispa European gooseberry
Ribes viscosissimum sticky currant
Ribes Xnidigrolaria jostaberry bush
Ricinus communis castor oil plant
Robinia hispida rose acacia
Robinia hispida var. fertilis bristly locust
Robinia neomexicana New Mexico locust
Robinia pseudoacacia black locust
Robinia viscosa clammy locust
Robinia Xambigua pink Idaho locust
Rodgersia aesculifolia rodgersia
Rodgersia pinnata rodgersia
Rodgersia podophylla rodgersia
Romanzoffia sitchensis Sitka mistmaiden
Romanzoffia thompsonii
Romanzoffia tracyi Tracy's mistmaiden
Rorippa aquatica lake watercress
Rorippa calycina
Rorippa columbiae
Rorippa curvipes blunt-leaved watercress
Rorippa curvisiliqua western yellowcress
Rorippa palustris marsh yellowcress
Rorippa palustris subsp. hispida hispid marsh yellowcress
Rorippa palustris subsp. palustris marsh yellowcress
Rorippa sinuata
Rorippa subumbellata
Rorippa sylvestris creeping yellowcress
Rorippa tenerrima
Rosa 'Nearly Wild' floribunda hybrid rose
Rosa 'The Fairy' polyantha hybrid rose
Rosa Climbing Hybrids climbing rose
Rosa English Hybrids (including Austin Roses) English hybrid rose
Rosa Explorer Series Explorer Series Roses
Rosa Floribunda Hybrids floribunda hybrid rose
Rosa Flower Carpet Series flower carpet rose
Rosa Hybrid Tea selections hybrid tea rose
Rosa Meidiland Series Meidiland shrub rose
Rosa Miniature Hybrids miniature hybrid rose
Rosa Parkland Series Parkland shrub rose
Rosa Pavement Series pavement hybrid rose
Rosa Polyantha Hybrids polyantha hybrid rose
Rosa Rugosa Hybrids hybrid rugosa shrub rose
Rosa acicularis prickly wild rose
Rosa acicularis subsp. sayi prickly wild rose
Rosa arkansana prairie rose
Rosa arvensis field rose
Rosa banksiae Lady Banks' rose
Rosa blanda meadow rose
Rosa canina dog rose
Rosa carolina Carolina rose
Rosa cinnamomea cinnamon rose
Rosa gallica apothecary Rose
Rosa glauca blueleaf rose
Rosa gymnocarpa dwarf rose
Rosa hugonis Golden rose of China
Rosa multiflora Japanese rose
Rosa nitida shining rose
Rosa nutkana Nootka rose
Rosa nutkana subsp. macdougalii
Rosa odorata China rose
Rosa omeiensis omei rose
Rosa palustris swamp rose
Rosa pisocarpa clustered wild rose
Rosa rubiginosa eglantine
Rosa rubiginosa var. nemoralis smallflower sweet briar
Rosa rugosa Japanese rose
Rosa setigera climbing rose
Rosa spinosissima Scotch rose
Rosa tomentosa woolly rose
Rosa villosa apple rose
Rosa virginiana pasture rose
Rosa wichuraiana sunshine rose
Rosa woodsii Woods' rose
Rosa woodsii subsp. ultramontana pearhip rose
Rosa Xcentifolia musk rose
Rosa Xharisonii HarrisonÂ’s yellow rose
Rosmarinus officinalis rosemary
Rotala ramosior toothcup
Rubus allegheniensis common blackberry
Rubus arcticus arctic bramble
Rubus arcticus subsp. acaulis arctic bramble
Rubus caesius
Rubus canadensis smooth blackberry
Rubus chamaemorus bakeapple (NL)
Rubus cockburnianus whitestem bramble
Rubus flagellaris northern dewberry
Rubus fruticosus European blackberry
Rubus hispidus swamp dewberry
Rubus idaeus wild red raspberry
Rubus idaeus subsp. idaeus
Rubus idaeus subsp. strigosus wild red raspberry
Rubus laciniatus evergreen blackberry
Rubus lasiococcus
Rubus leucodermis blackcap raspberry
Rubus nivalis
Rubus occidentalis western raspberry
Rubus odoratus flowering raspberry
Rubus parviflorus thimbleberry
Rubus pedatus
Rubus pensilvanicus yankee blackberry
Rubus pentalobus Taiwan creeping raspberry
Rubus phoenicolasius Japanese wineberry
Rubus pubescens dwarf raspberry
Rubus repens dewdrop
Rubus saxatilis
Rubus setosus bristly blackberry
Rubus spectabilis salmonberry
Rubus ursinus
Rubus Xparacaulis hybrid plumboy
Rubus Xrecurvicaulis Blanchard's dewberry
Rudbeckia 'Herbstsonne' autumn sun coneflower
Rudbeckia fulgida orange coneflower
Rudbeckia fulgida var. fulgida
Rudbeckia grandiflora
Rudbeckia grandiflora var. grandiflora
Rudbeckia heliopsidis
Rudbeckia hirta black-eyed Susan
Rudbeckia hirta Hybrids gloriosa daisy
Rudbeckia hirta var. pulcherrima hairy coneflower
Rudbeckia laciniata tall coneflower
Rudbeckia maxima giant coneflower
Rudbeckia nitida
Rudbeckia occidentalis western coneflower
Rudbeckia scabrifolia
Rudbeckia subtomentosa sweet black-eyed susan
Rudbeckia triloba browneyed Susan
Rudbeckia triloba var. pinnatiloba
Ruellia caroliniensis Carolina wild petunia
Ruellia humilis hairy wild petunia
Ruellia strepens limestone wild petunia
Rumex acetosa green sorrel
Rumex acetosella field sorrel
Rumex altissimus pale dock
Rumex beringensis Bering Sea dock
Rumex britannica great water dock
Rumex crispus curly dock
Rumex dentatus dentate dock
Rumex fueginus Tierra del Fuego dock
Rumex longifolius dooryard dock
Rumex obtusifolius bitter dock
Rumex occidentalis western dock
Rumex pallidus pale willow dock
Rumex patientia spinach patience
Rumex paucifolius alpine sheep sorrel
Rumex sanguineus redvein dock
Rumex thyrsiflorus narrowleaf sorrel
Rumex triangulivalvis triangular-valved dock
Rumex venosus veiny dock
Rumex verticillatus swamp dock
Rupertia physodes
Ruppia cirrhosa spiral ditchgrass
Ruppia maritima beaked tasselweed
Ruta graveolens common rue