Canada's Plant Hardiness Site
Choose from the Genera below to see a list of species and
cultivars.
Email us if the plant you wish to report is not listed on the site, or to report any nomenclature errors.
P
Pachysandra
Packera
Paeonia
Panax
Panicum
Papaver
Paradisea
Parapholis
Paraserianthes
Pardancanda
Parentucellia
Parietaria
Paris
Parnassia
Paronychia
Parrotia
Parrotiopsis
Parrya
Parthenium
Parthenocissus
Pascopyrum
Paspalum
Passiflora
Pastinaca
Patrinia
Paulownia
Paxistima
Paysonia
Pectocarya
Pedicularis
Pediocactus
Pediomelum
Pellaea
Peltandra
Pennisetum
Penstemon
Pentaglottis
Pentagramma
Penthorum
Pericallis
Perideridia
Perilla
Peritoma
Perityle
Perovskia
Persea
Persicaria
Petalostemon
Petasites
Petrorhagia
Petroselinum
Petunia
Phacelia
Phalaris
Phaseolus
Phedimus
Phegopteris
Phellodendron
Phemeranthus
Philadelphus
Phillyrea
Phippsia
Phlebodium
Phleum
Phlomis
Phlox
Pholisma
Phoradendron
Phormium
Photinia
Phragmites
Phryma
Phuopsis
Phygelius
Phyla
Phyllodoce
Phyllospadix
Phyllostachys
Physalis
Physaria
Physocarpus
Physostegia
Phytolacca
Picea
Picradeniopsis
Picrasma
Picris
Pieris
Pilea
Pileostegia
Pilosella
Pimpinella
Pinckneya
Pinellia
Pinguicula
Pinus
Piper
Piptanthus
Piptatherum
Piptochaetium
Pistacia
Pisum
Pittosporum
Pityopsis
Plagiobothrys
Planera
Plantago
Platanthera
Platanus
Platycladus
Platycodon
Plectritis
Pleione
Pleuricospora
Pleuropogon
Pluchea
Plumeria
Poa
Podagrostis
Podistera
Podocarpus
Podophyllum
Podostemum
Pogogyne
Pogonia
Polanisia
Polemonium
Polycarpon
Polycnemum
Polygala
Polygaloides
Polygonatum
Polygonella
Polygonum
Polymnia
Polypodium
Polypogon
Polystichum
Polytaenia
Poncirus
Pontederia
Ponthieva
Populus
Portulaca
Potamogeton
Potentilla
Poteridium
Primula
Prinsepia
Proboscidea
Prosartes
Proserpinaca
Prosopis
Prostanthera
Prunella
Prunus
Psathyrostachys
Psephellus
Pseudocherleria
Pseudocydonia
Pseudofumaria
Pseudognaphalium
Pseudolarix
Pseudorchis
Pseudoroegneria
Pseudosasa
Pseudotsuga
Psilocarphus
Ptelea
Pteridium
Pterocarya
Pteroceltis
Pteroglossaspis
Pterospora
Pterostyrax
Pteryxia
Ptilimnium
Puccinellia
Pueraria
Pulmonaria
Punica
Purshia
Puschkinia
Pycnanthemum
Pyracantha
Pyrola
Pyrrocoma
Pyrus
Pyxidanthera