Pork and Beans Porphyrocoma
'Portor's Rossevelt' Boston Fern Portuguese Squill
'Portuguese Velvet' Mediterranean Spurge Pot Marigold 'Sunlovers Skyfire'
Pot Marjoram (spp.) Pot Marjoram Golden
Pot Marjoram 'Thumbles' Pot Marjoram Variegated
Pot Mum (spp.) Pot Mum 'Alisha'
Pot Mum 'Ashley' Pot Mum 'Barbie'
Pot Mum 'Bethany' Pot Mum 'Bonnie'
Pot Mum 'Bright Gretchan' Pot Mum 'Cool Cheryl'
Pot Mum 'Darlene' Pot Mum 'Diana'
Pot Mum 'Durango' Pot Mum 'Fiona'
Pot Mum 'Flashy Gretchen' Pot Mum 'Frosty Jeanette'
Pot Mum 'Hankie' Pot Mum 'Harvard'
Pot Mum 'Hillside Pink Sheffield' Pot Mum 'Hope'
Pot Mum 'Irvine Currant' Pot Mum 'Irvine Dark Bronze'
Pot Mum 'Irvine Pink' Pot Mum 'Irvine Red'
Pot Mum 'Irvine Regal' Pot Mum 'Irvine Yellow'
Pot Mum 'Jacqueline' Pot Mum 'Jillian'
Pot Mum 'Jolly Cheryl' Pot Mum 'Mary'
Pot Mum 'Mia' Pot Mum 'Minnautumn'
Pot Mum 'Miranda' Pot Mum 'Phyllis'
Pot Mum 'Plus' Pot Mum 'Priscilla'
Pot Mum 'Richmond' Pot Mum 'Rivendell'
Pot Mum 'Rock' Pot Mum 'Sheffield'
Pot Mum 'Sly-Jenna' Pot Mum 'Sparkling Cheryl'
Pot Mum 'Spirit Lake' Pot Mum 'Swing'
Pot Mum 'Theresa' Pot Mum 'White Needle'
Pot Mum 'Wilma' Pot Mum 'Yellow Sharp'
Pot of Gold (spp.) Pot of Gold 'Baby Sun'
Pot of Gold 'Goldfink' Pot of Gold 'Sterntaler'
Pot of Gold: verticillata 'Golden Showers' Pot of Gold: verticillata 'Grandiflora'
Pot of Gold: verticillata 'Moonbeam' Pot of Gold: verticillata 'Zagreb'
Potato Bean Potato Bush, Blue (spp.)
Potato Vine (spp.) Potato Vine Variegated
Potato Vine, Wild Potato Vine: wendlandii
Potato, African Pouch Flower
Powder-Puff Cactus 'Powis Castle' Large Wormwood
Praire Coneflower Praire Flax
Prairie Blazing Star 'Prairie Blue Eyes' Daylily
Prairie Cord Grass 'Aureo-marginata' Prairie Double-flowered Buttercup (spp.)
Prairie Double-flowered Buttercup 'Buttered Popcorn' Prairie Double-flowered Buttercup 'Pleniflorus'
Prairie Dropseed Grass Prairie Grass (spp.)
Prairie Grass 'The Blues' Prairie Mallow 'Elsie Heugh'
'Prairie Moonlight' Daylily Prairie Onion
Prairie Sage (spp.) Prairie Sage 'Silver Queen'
Prairie Smoke Prairie Spiderwort
'Prairie Sun' Black-eyed Susan Prairie Zinnia
Pratia Prayer Plant (spp.)
Prayer Plant 'Herringbone Plant' Prayer Plant: leuconeura kerchoviana
'Pretty in Rose' Madagascar Periwinkle Pretty Pebbles