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Scientific Name Common Name(s) Plant Category Image
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 Podocarpus, Shrubby yew podocarpus, Yew plum pine Edible Plants, Poisonous Plants, Shrubs, Trees
Podocarpus macrophyllus var. maki 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 Jacob's ladder Native Plants, Perennials
Polianthes 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
Polygonum spp. Knotweed Perennials
Polypodium aureum Cabbage palm fern, Gold foot fern, Golden polypody, Hare foot fern, Rabbits foot fern Ferns
Polypodium polypodioides Resurrection fern Ferns
Polyscias balfouriana Aralia Balfour Shrubs, Trees
Polyscias fruiticosa Ming aralia Shrubs, Trees
Polyscias spp. Aralia Poisonous Plants
Polystichum acrostichoides Christmas fern Ferns, Native Plants
Polystichum braunii Braum's holly fern Ferns
Polystichum polyblepharum Korean tassel fern Ferns
Polystichum polylepharum Bristle fern, Japanese tassel fern, Tassel fern Ferns
Polystichum setiferum Hedge fern, Soft shield fern Ferns
Polystichum tsus-simense Korean rock fern, Tsu-sima holly fern Ferns
Poncirus trifoliata Trifoliate orange Poisonous Plants
Pontederia cordata Pickerel weed, Pickerelweed Herbs, Native Plants, Water Garden, Wildflowers
Pontederia cordata alba White pickerel weed Wildflowers
Populus deltoides Eastern cottonwood, Eastern poplar Shrubs, Trees
Populus nigra Black poplar, Lombardy poplar Trees
Porteranthus trifoliatus Bowman's root, Mountain indian physic Wildflowers
Portulaca grandiflora Moss rose, Portulaca, Purslane Annuals
Portulaca oleracea Common purslane, Little hog weed, Moss rose, Pigweed, Purslane Annuals, Edible Plants
Potentilla canadensis Dwarf cinquefoil Wildflowers
Potentilla fruticosa Shrubby cinquefoil, Shrubby potentilla Groundcover, Shrubs
Potentilla recta Rough-fruited cinquefoil Wildflowers
Potentilla tridentata Three-toothed cinquefoil Wildflowers
Potentilla x hybrida Cinquefoil Perennials