Plant Common Names Starting With ‘P’
- Pale Desert-thorn
- Pale Devil's Claw
- Pale Lycium
- Pale Wolfberry
- Paleface
- Palm-leaf Mistflower
- Palmer Amaranth
- Palmer Penstemon
- Palmer's Agave
- Palmer's Amaranth
- Palmer's Century Plant
- Palmer's Penstemon
- Palmilla Sacahuista
- Palmleaf Thoroughwort
- Palo Verde, Blue
- Palo Verde, Foothill
- Palo Verde, Littleleaf
- Palo Verde, Mexican
- Paloverde, Blue
- Paloverde, Foothill
- Paloverde, Littleleaf
- Paloverde, Mexican
- Paloverde, Yellow
- Papalo
- Papaloquelite
- Paperflower, Cooper's
- Paperflower, Whitestem
- Parry Dalea
- Parry's Beardtongue
- Parry's False Prairie-clover
- Parry's Penstemon
- Parsley, Mountain
- Parsnip, Cow
- Parsnip, Wild
- Passion Flower, Blue
- Passion Flower, Mexican
- Passionflower, Arizona
- Passionflower, Arizonia
- Passionflower, Blue
- Passionflower, Blue-crown
- Passionflower, Bluecrown
- Passionflower, Fetid
- Passionflower, Mexican
- Passionflower, Stinking
- Pearly Everlasting, Western
- Pelotazo
- Pencil Cholla
- Pencil Cholla, Arizona
- Pennsylvania Knotweed
- Pennsylvania Smartweed
- Pennyroyal, Floating
- Pennywort, Floating
- Penstemon, Arizona
- Penstemon, Beardlip
- Penstemon, Desert
- Penstemon, Eaton's
- Penstemon, Firecracker
- Penstemon, Golden-beard
- Penstemon, Palmer
- Penstemon, Palmer's
- Penstemon, Parry's
- Penstemon, Porch
- Penstemon, Rocky Mountain
- Penstemon, Southwestern
- Perennial Morningglory
- Perennial Rockcress
- Perezia
- Periwinkle, Big
- Periwinkle, Bigleaf
- Periwinkle, Greater
- Periwinkle, Large
- Petioled Sunflower
- Petunia, Midget
- Petunia, Seaside
- Petunia, Wild
- Phacelia, Arizona
- Phacelia, Blue
- Phacelia, Distant
- Phacelia, Limestone
- Phacelia, Purplebell
- Phacelia, Scalloped
- Phlox, Desert
- Phlox, Santa Catalina Mountain
- Phlox, Vine
- Pigeon Berry
- Pigeonberry
- Pignut
- Pigweed
- Pima Ratany
- Pimpernel, Blue
- Pimpernel, Scarlet
- Pincushion Cactus
- Pincushion, Esteve's
- Pine Dwarf Mistletoe
- Pine Spiderwort
- Pine-Needle Milkweed
- Pineland Dwarf Mistletoe
- Pineland Figwort
- Pineneedle Milkweed
- Pinewoods Spiderwort
- Pineywoods Geranium
- Pink Evening-primrose
- Pink Knotweed
- Pink Windmills
- Pinkflower Hedgehog Cactus
- Pinkweed
- Pinos Altos Mountain Bean
- Pinweed
- Pinyon, Border
- Pipevine, Southwestern
- Plains Blackfoot
- Plains Mustard, Slimleaf
- Plains Sunflower
- Plains Zinnia
- Plainsmustard, Slimleaf
- Plantago, Indian
- Plantain, Desert
- Plantain, Woolly
- Pleurisy Root
- Plumeseed, New Mexico
- Pointleaf Manzanita
- Polka Dot Cactus
- Poor Man's Weatherglass
- Poorman's Weatherglass
- Popcorn Flower
- Popcornflower, Arizona
- Poplar, Trembling
- Poppy, Arizona
- Poppy, California
- Poppy, Mexican
- Poppy, Mexican Gold
- Poppy, Opium
- Poppy, Prickly
- Porch Penstemon
- Poreleaf, Slender
- Portulaca, Wild
- Potato, Fendler's
- Potato, Wild
- Prairie Acacia
- Prairie Clover, Dwarf
- Prairie Clover, Pringle's
- Prairie Clover, Purple
- Prairie Clover, Santa Catalina
- Prairie Clover, Scruffy
- Prairie Clover, Scurfy
- Prairie Clover, Violet
- Prairie Clover, White
- Prairie Clover, Whiteflower
- Prairie Coneflower, Columnar
- Prairie Coneflower, Upright
- Prairie Flax
- Prairie Spiderwort
- Prairie Sunflower
- Prairie Zinnia
- Prairie-clover, Purple
- Prairie-clover, White
- Prairieclover, Dwarf
- Pricklepoppy, Bluestem
- Prickly Lettuce
- Prickly Pear, Chenille
- Prickly Pear, Engelmann's
- Prickly Pear, Santa Rita
- Prickly Poppy
- Prickly Russian Thistle
- Prickly Sow Thistle
- Prickly-pear, Bunny-ear
- Prickly-pear, Purple
- Pricklyleaf, Five-needle
- Pricklyleaf, Fiveneedle
- Pricklypear, Chenille
- Pricklypear, Engelmann's
- Pricklypear, Santa Rita
- Pricklypoppy, Southwestern
- Primrose, Stemless
- Pringle's Clustervine
- Pringle's Prairie Clover
- Procumbent Sida
- Prostrate Evolvulus
- Prostrate Lawnflower
- Prostrate Sida
- Psyllium, Blonde
- Puccoon
- Pumkin, Wild
- Puncture Vine
- Puncturevine
- Purple Aster
- Purple Bladderpod
- Purple Cluster Geranium
- Purple Geranium
- Purple Ground Cherry
- Purple Loosestrife
- Purple Mustard
- Purple Nightshade
- Purple Owl's-clover
- Purple Prairie Clover
- Purple Prairie-clover
- Purple Prickly-pear
- Purple Wild Geranium
- Purplebell Phacelia
- Purpleflower Groundcherry
- Purplenerve Springparsley
- Purslane, Common
- Purslane, Copper
- Purslane, Crownpod
- Purslane, Garden
- Purslane, Green
- Purslane, Shrubby
- Purslane, Wingpod
- Pursley
- Pygmy Monkey Flower
