Click on a genus name to see a list of species. Select a letter on the left to see more genus entries.

Pachysandra (Spurge )

Paeonia (Peony)

Parkinsonia (Palo Verde)

Parrotia (Persian Parrotia )

Parrotiopsis

Parthenocissus (Virginia Creeper)

Passiflora (Passion Flower)

Paulownia

Paxistima (Mountain Lover)

Phellodendron

Philadelphus (Mockorange)

Phillyrea

Photinia (Photinia)

Physocarpus (Ninebark)

Picea (Spruce)

Picea abies (Norway Spruce)
Picea abies 'Cupressina' (Cupressina Norway Spruce)
Picea abies 'Gold Drift' (Gold Drift Weeping Norway Spruce)
Picea abies 'Nidiformis' (Nest Spruce )
Picea abies var. pendula (Weeping Norway Spruce )
Picea asperata (Dragon Spruce)
Picea breweriana (Brewer Spruce )
Picea engelmannii (Engelmann Spruce)
Picea gemmata (Szechwan Spruce)
Picea glauca (White Spruce )
Picea glauca 'Conica' (Dwarf Alberta Spruce )
Picea glauca 'Densata' (Black Hills Spruce)
Picea glauca 'Pendula' (Weeping White Spruce)
Picea glauca 'Sander's Blue' (Sander's Blue Alberta Spruce)
Picea koyamae (Koyama's Spruce )
Picea mariana (Black Spruce )
Picea mariana 'Aureovariegata' (Variegated Black Spruce)
Picea omorika (Serbian Spruce)
Picea omorika 'Bruns' (Bruns Serbian Spruce)
Picea omorika 'Pendula' (Weeping Serbian Spruce)
Picea omorika 'Pendula Bruns' (Bruns Weeping Serbian Spruce)
Picea omorika 'Pimoko' (Pimoko Serbian Spruce)
Picea orientalis (Caucasian Spruce)
Picea orientalis 'Atrovirens' (Atrovirens Oriental Spruce)
Picea orientalis 'Barnes' (Barnes Oriental Spruce)
Picea orientalis 'Skylands' (Skylands Oriental Spruce)
Picea pungens (Colorado Spruce)
Picea pungens 'Baby Blueeyes' (Baby Blueeyes Colorado Blue Spruce)
Picea pungens 'Fastigiata' (Columnar Blue Spruce )
Picea pungens 'Fat Albert' (Fat Albert Colorado Blue Spruce)
Picea pungens var. glauca (Colorado Blue Spruce)
Picea pungens 'Glauca Globosa' (Globosa Colorado Blue Spruce )
Picea pungens 'Glauca Prostrata' (Prostrate Colorado Blue Spruce)
Picea pungens 'Montgomery' (Montgomery Blue Spruce)
Picea pungens 'The Blues' (The Blues Colorado Blue Spruce )
Picea rubens (Red Spruce)
Picea sitchensis (Sitka Spruce)
Picea sitchensis 'Papoose' (Papoose Sitka Spruce)
Picea wilsonii (Wilson's Spruce)

Pieris

Pinus (Pine)

Pinus albicaulis (Whitebark Pine )
Pinus aristata (Bristlecone Pine )
Pinus aristata 'Bashful #75' (Bashful #75 Bristlecone Pine)
Pinus attenuata (Knobcone Pine)
Pinus banksiana (Jack Pine )
Pinus banksiana 'Angell' (Angell Jack Pine)
Pinus bungeana (Lacebark Pine )
Pinus canariensis (Canary Island Pine)
Pinus cembra (Swiss Stone Pine)
Pinus cembra 'Columnaris' (Columnar Swiss Stone Pine)
Pinus contorta (Shore pine )
Pinus contorta var. contorta (Shore Pine)
Pinus contorta var. latifolia (Rocky Mountain Lodgepole Pine)
Pinus contorta var. latifolia 'Chief Joseph' (Chief Joseph Lodgepole Pine)
Pinus contorta var. latifolia 'Taylor's Sunburst' (Taylor's Sunburst Lodgepole Pine )
Pinus contorta 'Spaan's Dwarf' (Spaan's Dwarf Shore Pine)
Pinus coulteri (Coulter Pine)
Pinus densiflora (Japanese Red Pine)
Pinus densiflora 'Golden Ghost' (Golden Ghost Japanese Red Pine)
Pinus densiflora 'Pendula' (Weeping Japanese Red Pine)
Pinus densiflora 'Umbraculifera' (Tanyosho Pine)
Pinus edulis (Pinyon Pine )
Pinus elliottii (Slash Pine)
Pinus flexilis (Limber Pine )
Pinus flexilis 'Vanderwolf's Pyramid' (Vanderwolf's Pyramid Limber Pine)
Pinus halepensis (Aleppo Pine )
Pinus heldreichii (Bosnian Pine )
Pinus heldreichii 'Compact Gem' (Compact Gem Bosnian Pine)
Pinus heldreichii 'Irish Bell' (Irish Bell Bosnian Pine)
Pinus heldreichii 'Schmidtii' (Schmidt Bosnian Pine)
Pinus jeffreyi (Jeffrey Pine )
Pinus kwangtungensis (Kwangtung Pine )
Pinus lambertiana (Sugar Pine)
Pinus leucodermis (Bosnian Pine )
Pinus monophylla (Singleleaf Pinon Pine )
Pinus monticola (Western White Pine)
Pinus monticola 'Nana' (Dwarf Western White Pine)
Pinus monticola 'Pendula' (Weeping Western White Pine)
Pinus mugo (Mugo Pine)
Pinus mugo 'Golden Mound' (Golden Mound Mugo Pine)
Pinus mugo 'Mini Mini' (Mini Mini Mugo Pine)
Pinus mugo 'Mitsch Mini' (Mitsch Mini Mugo Pine)
Pinus mugo 'Oregon Jade' (Oregon Jade Mugo Pine)
Pinus mugo var. pumilio (Mugo pine)
Pinus nigra (Austrian Pine)
Pinus nigra 'Black Prince' (Black Prince Austrian Pine)
Pinus nigra 'Moseri' (Moseri Austrian Pine)
Pinus nigra 'Oregon Green' (Oregon Green Austrian Pine)
Pinus parviflora (Japanese White Pine)
Pinus parviflora 'Glauca' (Glauca Japanese White Pine )
Pinus parviflora 'Ogon janome' (Ogon janome Japanese White Pine)
Pinus parviflora 'Pygmy Yatsubusa' (Pygmy Yatsubusa Japanese White Pine)
Pinus parviflora 'Tani Mano Uki' (Tani Mano Uki Japanese White Pine )
Pinus parvifola 'Catherine Elizabeth' (Catherine Elizabeth Japanese White Pine)
Pinus pinaster (Maritime Pine )
Pinus pinea (Italian Stone Pine )
Pinus ponderosa (Ponderosa Pine )
Pinus ponderosa 'Dixie' (Dixie Ponderosa Pine)
Pinus pumila (Japanese Stone Pine )
Pinus pumila 'Dwarf Blue' (Dwarf Blue Japanese Stone Pine )
Pinus radiata (Monterey Pine)
Pinus resinosa (Red Pine)
Pinus sabiniana (Gray Pine )
Pinus strobiformis (Southwestern White Pine )
Pinus strobus (Eastern White Pine)
Pinus strobus 'Alba' (Alba (Eastern) White Pine)
Pinus strobus 'Fastigiata' (Fastigiata (Eastern) White Pine )
Pinus strobus 'Ground Hugger' (Ground Hugger Eastern White Pine)
Pinus strobus 'Louie' (Louie (Eastern) White Pine)
Pinus strobus 'Macopin' (Macopin (Eastern) White Pine)
Pinus strobus 'Nana' (Dwarf (Eastern) White Pine)
Pinus strobus 'Pendula' (Weeping (Eastern) White Pine)
Pinus strobus 'Sea Urchin' (Sea Urchin (Eastern) White Pine)
Pinus strobus 'Torulosa' (Twisted (Eastern) White Pine)
Pinus strobus 'Verkade's Broom' (Verkade's Broom (Eastern) White Pine )
Pinus sylvestris (Scots Pine )
Pinus sylvestris 'Albyn Prostrata' (Albyn Prostata Scots Pine )
Pinus sylvestris 'Glauca Nana' (Glauca Nana Scots Pine)
Pinus sylvestris 'Globosa Viridis' (Globosa Viridis Scots Pine)
Pinus sylvestris 'Hillside Creeper' (Hillside Creeper Scots Pine)
Pinus sylvestris 'Nisbet's Gold' (Nisbet's Gold Scots Pine)
Pinus thunbergii (Japanese Black Pine)
Pinus thunbergii 'Ogon' (Golden Japanese Black Pine)
Pinus thunbergii 'Thunderhead' (Thunderhead Japanese Black Pine)
Pinus virginiana (Virginia Pine )
Pinus virginiana 'Wate's Golden' (Wate's Golden Virginia Pine)
Pinus wallichiana (Himalayan Pine )
Pinus wallichiana 'Zabrina' (Zabrina Himalayan Pine )
Pinus yunnanensis (Yunnan Pine)

Pistacia (Pistache)

Pittosporum (Australian Laurel)

Platanus (Sycamore )

Platycarya

Platycladus (Oriental Arborvitae)

Podocarpus (Podocarp )

Polygonum (Knotweed )

Polystichum (Wood Fern )

Poncirus (Trifoliate Orange)

Populus (Poplar )

Potentilla (Cinquefoil)

Prumnopitys (Plum-seeded Yew )

Prunus

Prunus 'Accolade' (Accolade Flowering Cherry)
Prunus americana (Wild Plum )
Prunus armeniaca (Apricot)
Prunus armeniaca 'Goldcot' (Goldcot Apricot)
Prunus avium (Sweet Cherry)
Prunus besseyi (Sand Cherry )
Prunus × blireiana (Blireiana Plum)
Prunus caroliniana (Carolina Cherrylaurel )
Prunus Cascade Snow™ (Cascade Snow Flowering Cherry)
Prunus cerasifera (Cherry Plum)
Prunus cerasifera 'Atropurpurea' (Atropurpurea Flowering Plum)
Prunus cerasifera 'Krauter's Vesuvius' (Krauter's Vesuvius Flowering Plum )
Prunus cerasifera 'Thundercloud' (Thundercloud Flowering Plum )
Prunus × cistena (Purpleleaf Sandcherry )
Prunus 'Dream Catcher' (Dream Catcher Flowering Cherry)
Prunus emarginata (Bitter Cherry )
Prunus 'First Lady' (First Lady Flowering Cherry)
Prunus fruticosa (Steppe Cherry )
Prunus glandulosa (Dwarf Flowering Almond)
Prunus ilicifolia (Hollyleaf Cherry )
Prunus laurocerasus (Cherry Laurel )
Prunus laurocerasus 'Marbled Dragon' (Marbled Dragon Laurel)
Prunus laurocerasus 'Mt. Vernon' (Mt. Vernon Laurel)
Prunus laurocerasus 'Otto Luyken' (Otto Luyken's Laurel)
Prunus laurocerasus 'Zabeliana' (Zabel's Laurel)
Prunus lusitanica (Portuguese Cherry Laurel .)
Prunus maackii (Amur Chokecherry )
Prunus mume (Japanese Apricotc )
Prunus mume 'Contorta' (Contorta Japanese Flowering Apricot)
Prunus mume 'Peggy Clarke' (Peggy Clarke Japanese Flowering Apricot)
Prunus mume 'Trumpet' (Trumpet Japanese Flowering Apricot)
Prunus 'Newport' (Newport Flowering Plum)
Prunus 'Okame' (Okame Flowering Cherry)
Prunus padus (European Birdcherry )
Prunus prostrata (Rock Cherry )
Prunus sargentii (Sargent Cherry)
Prunus sargentii 'Columnaris' (Columnar Sargent Cherry)
Prunus serotina (Black Cherry )
Prunus serrula (Birchbark Cherry )
Prunus serrulata (Japanese Flowering Cherry )
Prunus serrulata 'Kanzan' (Kanzan Flowering Cherry)
Prunus serrulata 'Mt. Fuji' (Mt. Fuji Flowering Cherry)
Prunus serrulata 'Royal Burgundy' (Royal Burgundy Flowering Cherry)
Prunus serrulata 'Shiro-fugen' (Shiro-fugen Flowering Cherry)
Prunus serrulata 'Shogetsu' (Shogetsu Flowering Cherry)
Prunus serrulata 'Ukon' (Ukon Flowering Cherry)
Prunus Snow Fountains® (Snow Fountains Weeping Cherry )
Prunus 'Snow Goose' (Snow Goose Flowering Cherry)
Prunus subcordata (Klamath Plum )
Prunus subhirtella (Higan Cherry)
Prunus subhirtella var. autumnalis (Autumn Flowering Higan Cherry)
Prunus subhirtella 'Pendula' (Weeping Higan Cherry)
Prunus subhirtella 'Whitcomb' (Whitcomb Flowering Higan Cherry)
Prunus subhirtella 'Yae-shidare-higan' (Yae-shedare Higan Cherry )
Prunus 'Tai-Haku' (Tai-Haku Flowering Cherry )
Prunus virginiana 'Canada Red' (Canada Red Chokecherry)
Prunus virginiana var. demissa (Western Chokecherry)
Prunus virginiana var. virginiana (Common Chokecherry)
Prunus × yedoensis (Yoshino Cherry )
Prunus × yedoensis 'Akebono' (Akebono Yoshino Cherry)

Pseudolarix (Golden Larch)

Pseudotsuga (Douglas-fir)

Ptelea (Hop Tree )

Pterocarya (Wingnut)

Pterostyrax

Punica (Pomegranate)

Purshia (Bitterbrush)

Pyracantha (Firethorn)

Pyrus (Pear)

Click on a genus name to see a list of species. Select a letter on the left to see more entries.