'Platina White' Foothill Penstemon 'Platinum Tiara' Hosta
'Platt's Black' Flax Plectranthus 'James'
'Plena' European Meadowsweet 'Pleniflorus' Creeping Buttercup
'Plenum-Caeruleum' Meadow Cranesbill 'Plenum-Violaceum' Meadow Cranesbill
Plover Eggs Plumbago, Blue
Plumbago, Dwarf Plume Poppy
Plumosa Fern 'Plumosa' Meadow Sage
'Plumosomultilobum' English Hedge Fern 'Plumosum' Oak Fern
'Plus' Florist's Chrysanthemum Plush Plant
Plush Plant: tomentosa Pocketbook Flower
Pocketbook Flower: falklandica 'Poestlingberg' Magnolia Waterlily
'Poin Set' Daylily Poinsettia, Japanese (spp.)
Poinsettia, Japanese 'Yokoi's White' Pointed Barrenwort
Poison Bulb Poison Hemlock
Poison Primrose (spp.) Poison Primrose 'Apple Blossom'
Poisonous Nightshade Poke (spp.)
Poker Plant (spp.) Poker Plant 'Early Hybrids'
Poker Plant 'Flamenco' Poker Plant 'Flava'
Poker Plant 'Lola' Poker Plant 'Pfitzeri'
Poker Plant 'Primrose Beauty' Poker Plant 'Springtime'
Pokeweed (spp.) 'Polar Star' African Daisy: Osteospermum
Polemonium, Arctic 'Heavenly Habit' Polemonium, Creeping
Polka Dot Plant (spp.) Polka Dot Plant 'Confetti Red'
Polyanthus Primrose (spp.) Polygala, Fringed
'Pomegranate' Yarrow Pond Lily (spp.)
Pond Lily 'Sulphurea Grandiflora' Pondweed
Ponysfoot, Silver 'Lawn Leaf' Ponysfoot, Silver 'Silver Bush'
Ponytail Grass Ponytail Palm
Poor Knight's Lily Poor Man's Orchid
Poppy Poppy Anemone (spp.)
Poppy Anemone 'Mr. Fokker' Poppy Anemone 'The Bride'
Poppy Mallow, Finger Poppy, Arctic (spp.)
Poppy, Arctic 'Champagne Bubbles' Poppy, Arctic 'Wonderland Mix'
Poppy, Blue (spp.) Poppy, Blue 'Lingholm'
Poppy, California Tree Poppy, Celandine
Poppy, Himalayan Blue (spp.) Poppy, Himalayan Blue 'Lingholm'
Poppy, Iceland (spp.) Poppy, Iceland 'Champagne Bubbles'
Poppy, Iceland 'Wonderland Mix' Poppy, Matilja
Poppy, Mexican Tulip (spp.) Poppy, Oriental (spp.)
Poppy, Oriental 'Allegro' Poppy, Oriental 'Beauty of Livermore'
Poppy, Oriental 'Brilliant' Poppy, Oriental 'China Boy'
Poppy, Oriental 'Garden Glory' Poppy, Oriental 'Karine'
Poppy, Oriental 'Pink Ruffles' Poppy, Oriental 'Pinnacle'
Poppy, Oriental 'Pizzicato' Poppy, Oriental 'Princess Victoria Louise'
Poppy, Oriental 'Queen Alexander' Poppy, Oriental 'Raspberry Queen'
Poppy, Oriental 'Royal Wedding' Poppy, Oriental 'Turkenlouis'
Poppy, Plume Poppy, Rough Seeded California
Poppy, Water Poppy, Welsh
Poppy, Wood Poppy: coulteri, California Tree
'Popsicle' Lupine 'Popsie' Louisiana Iris