Poppy, Bush Poppy, Island Tree
'Popsicles' Lantana Porcelain Berry Vine (spp.)
Porcelain Berry Vine 'Elegans' Port Jackson Fig (spp.)
Port Jackson Fig Variegated Port Lincoln Mallee
Port Orford Cedar (spp.) Port Orford Cedar 'Aurea Densa'
Port Orford Cedar 'Columnaris' Port Orford Cedar 'Erecta'
Port Orford Cedar 'Fletcheri' Port Orford Cedar 'Globosa Nana'
Port Orford Cedar Golden Port Orford Cedar Golden
Port Orford Cedar 'Green Pillar' Port Orford Cedar 'Intertexta'
Port Orford Cedar 'Lane' Port Orford Cedar 'Lane's Aurea'
Port Orford Cedar 'Minima Aurea' Port Orford Cedar 'Pembury Blue'
Port Orford Cedar 'Pottenii' Port Orford Cedar 'Triomf van Boskoop'
Port Orford Cedar 'Wisselii' Port Orford Cedar 'Yvonne'
Porterweed, Blue Porterweed, Coral Variegated
Porterweed, Purple Portia Tree
'Portrait' Rose Portugal Lauel
Portugese Cypress Portugese Laurel Cherry
Possum Haw Holly (spp.) Possum Haw Holly 'Benton'
Possum Haw Holly 'Byers Golden' Possum Haw Holly 'Cascade'
Possum Haw Holly 'Council Fire' Possum Haw Holly 'Hunter'
Possum Haw Holly 'Miller City' Possum Haw Holly 'Pocohantas'
Possum Haw Holly 'Sentry' Possum Haw Holly 'Sundance'
Possum Haw Holly 'Warren's Red' Possum Haw (spp.)
Possum Haw Viburnum (spp.) Possum Haw Viburnum 'Brandywine™'
Possum Haw Viburnum 'Winterthur' Possum Haw 'Brandywine™'
Possum Haw 'Winterthur' Possumwood
Post Oak 'Postelense' Hedge Maple
Potato Bush, Blue (spp.) Potentilla (spp.)
Potentilla 'Abbottswood' Potentilla 'Apricot Whisper'
Potentilla 'Arbuscula' Potentilla 'Beanii'
Potentilla 'Coronation Triumph' Potentilla 'Dakota Goldspot®'
Potentilla 'Dakota Sunrise' Potentilla 'Dakota Sunspot™'
Potentilla 'Dart's Golddigger' Potentilla 'Floppy Disc'
Potentilla 'Gold Drop' Potentilla 'Gold Gem'
Potentilla 'Goldfinger' Potentilla 'Happy Face® Pink Paradise'
Potentilla 'Happy Face® White' Potentilla 'Happy Face® Yellow'
Potentilla 'Jackmanii' Potentilla 'Katherine Dykes'
Potentilla 'Lady Daresbury' Potentilla 'Longacre'
Potentilla 'Manelys' Potentilla 'McKay's White'
Potentilla 'Mount Townsend' Potentilla 'Parvifolia'
Potentilla 'Pink Beauty' Potentilla 'Pink Whisper'
Potentilla 'Primrose Beauty' Potentilla 'Princess'
Potentilla 'Snowbird' Potentilla 'Sundance'
Potentilla 'Sunset' Potentilla 'Sutter's Gold'
Potentilla 'Vilmoriniana' Pothos Ivy (spp.)
Pothos Ivy 'Tropic Green' 'Pottenii' Lawson's Cypress
'Potter's Purple' Butterflybush Powder Puff Tree
Powderpuff (spp.) Powderpuff Dwarf
Powderpuff, American 'Praecox' Panicle Hydrangea
Prague Viburnum (spp.) Prague Viburnum 'Decker'