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Scientific Name Common Name(s) Plant Category Image
Pinus sylvestris Scotch pine Shrubs, Trees
Pinus sylvestris 'Glauca Nana' Dwarf blue Scotch pine Shrubs
Pinus sylvestris 'Nana' Dwarf Scotch pine Shrubs
Pinus sylvestris 'Watereri' Walter pine Shrubs
Pinus taeda Loblolly pine Native Plants, Trees
Pinus taeda 'Dixie', 'Nana' Dwarf loblolly pine Trees
Pinus thunbergiana Japanese black pine Trees
Pinus thunbergiana 'Thunderhead' Thunderhead pine Shrubs
Pinus virginiana Virginia pine Native Plants, Trees
Pinus wallichiana Butan pine, Himalayan pine Trees
Pinus yunnanensis Chinese pine, Yunnan pine Trees
Pistacia chinensis Chinese pistache, Chinese pistachio Trees
Pistia stratiotes Water lettuce Poisonous Plants, Water Garden
Pittosporum tobira Japanese pittosporum, Mock orange, Pittosporum Shrubs, Trees
Pityopsis graminifolia Narrow-leaf Silkgrass Groundcover, Native Plants, Perennials, Wildflowers
Plantago lanceolata Lance leaf plantain, Lanceleaf plantain, Narrow-leaf plantain, Narrowleaf plantain, Ribwort plantain, Strap leaf plantain, Strapleaf plantain Edible Plants, Herbs
Plantago major Plantain Edible Plants, Perennials
Platanthera ciliaris Yellow fringed orchid Wildflowers
Platanthera spp. Purple fringed orchid Wildflowers
Platanus occidentalis American sycamore, Eastern sycamore, sycamore Native Plants, Trees
Platanus orientalis var. digitata Oriental planetree Trees
Platanus x acerfolia London plane tree, London planetree Trees
Platycerium bifurcatum Elkhorn fern, Staghorn fern Ferns
Platycladus orientalis Oriental arborvitae Shrubs, Trees
Platycodon grandiflorus Balloon flower Perennials
Plectranthus argentatus Silver plectranthus, Silver spur flower Annuals
Plectranthus forsteri 'Marginatus' Swedish ivy Annuals, Groundcover, Perennials
Pleioblastus auricoma Compact golden striped bamboo, Kanuro zasa Ornamental Grass
Pleiodlastus variegatus Compact white striped bamboo Ornamental Grass
Plerandra elegantissima False Aralia Shrubs, Trees
Plumbago auriculata Cape leadwort Annuals, Poisonous Plants, Vines
Plumbago auriculata = P. capensis Cape leadwort Poisonous Plants, Shrubs
Plumbago spp. Leadwort, plumbago Poisonous Plants
Poa annua L. Annual bluegrass Herbs
Podocarpus macrophyllus Buddist pine, Fern pine, Podocarpus, Shrubby yew podocarpus, Southern yew, Yew pine, Yew plum pine Edible Plants, Poisonous Plants, Shrubs, Trees
Podocarpus macrophyllus var. maki Chinese Podocarpus, Shrubby podocarpus Poisonous Plants, Shrubs
Podophyllum peltatum May-apple, Mayapple, mandrake Native Plants, Perennials, Poisonous Plants, Wildflowers
Pogonia ophioglossoides Rose crested orchid, Rose pogonia Wildflowers
Polemonium reptans Greek valerian, Jacob's ladder Native Plants, Perennials
Polianthes spp. Polyanthus lily, Tuberose Summer Bulbs
Poliothyrsis sinensis Poliothyrsis Trees
Polygala curtissii Curtiss milkwort, Polygala Wildflowers
Polygala lutea Orange milkwort, Yellow milkwort Wildflowers
Polygonatum biflorum Solomon's seal Native Plants, Perennials, Poisonous Plants, Wildflowers
Polygonatum humile Dwarf Solomon's seal Groundcover, Poisonous Plants
Polygonatum spp. Solomon's seal Poisonous Plants
Polygonum aubertii Fleece vine, Silver lace vine Vines
Polygonum hydropiper Smartweed, Water-pepper Wildflowers
Polygonum orientale Garden gate, Kiss-me over-the garden gate Annuals
Polygonum pennsylvanicum Pennsylvania smartweed, Pink knotweed Wildflowers