Pelecyphora aselliformis Pellaea falcata
Pellionia pulchra Peltandra sagittifolia
Peltandra virginica Peltandra virginica 'Variegata'
Peltophorum africanum Peltophorum dubium
Peltophorum pterocarpum Pennisetum alopecuroides
Pennisetum alopecuroides 'Hamelin' Pennisetum alopecuroides 'Little Bunny'
Pennisetum alopecuroides 'Little Honey' Pennisetum alopecuroides 'Moudry'
Pennisetum alopecuroides 'Orientale' Pennisetum alopecuroides 'Purpurascens'
Pennisetum alopecuroides 'Weserbergland' Pennisetum glaucum 'Jade Princess'
Pennisetum glaucum 'Purple Majesty' Pennisetum messiacum 'Red Buttons'
Pennisetum orientale Pennisetum orientale 'Karley Rose'
Pennisetum orientale 'Tall Tails' Pennisetum purpureum 'Graceful Grasses® Vertigo®'
Pennisetum setaceum Pennisetum setaceum 'Burgundy Giant'
Pennisetum setaceum 'Graceful Grasses® Fireworks' Pennisetum setaceum 'Graceful Grasses® Rubrum'
Pennisetum setaceum 'Purpureum' Pennisetum setaceum 'Rubrum'
Pennisetum villosum Penstemon 'Hidcote Pink'
Penstemon 'Middleton Gem' Penstemon 'Mother of Pearl'
Penstemon 'Phoenix Red' Penstemon 'Phoenix Violet'
Penstemon 'Purple Passion' Penstemon 'Sour Grapes'
Penstemon barbatus Penstemon barbatus 'Bashful'
Penstemon barbatus 'Elfin Pink' Penstemon barbatus 'Prairie Dusk'
Penstemon barbatus 'Rondo' Penstemon barrettiae
Penstemon caespitosus 'Claude Barre' Penstemon cobaea
Penstemon digitalis Penstemon digitalis 'Husker Red'
Penstemon eatonii Penstemon fructicosus 'Purple Haze'
Penstemon glaber Penstemon gloxinoides 'Ruby'
Penstemon grinnellii Penstemon guadalupsis
Penstemon hartwegii 'Alice Hindley' Penstemon heterophyllus 'Blue Bedder'
Penstemon heterophyllus 'Electric Blue' Penstemon heterophyllus 'Margarita BOP'
Penstemon heterophyllus 'Platina White' Penstemon hirsutus 'Pygmaeus'
Penstemon isophyllus Penstemon linarioides
Penstemon x mexicali 'Pike's Peak Purple' Penstemon x mexicali 'Red Rocks'
Penstemon pinifolius Penstemon spp.
Penstemon strictus Penstemon whippleanus
Pentalinum luteum Pentas lanceolata
Pentas lanceolata 'Buderin Blue' Pentas lanceolata 'Longwood Pink'
Pentas lanceolata 'New Look® Pink' Pentas lanceolata 'New Look® Rosa'
Pentas lanceolata 'Ruby Glow' Pentas lanceolata 'Stars & Stripes'
Pentas lanceolata 'Variegata' Peperomia argyreia
Peperomia caperata Peperomia clusiifolia 'Variegata'
Peperomia griseo-argentea Peperomia obtusifolia
Peperomia obtusifolia 'Variegata' Peperomia polybotrya
Peperomia rotundifolia var. pilsior Pereskia aculeata 'Godseffiana'
Pereskia bahiensis Pereskia bleo
Pereskia grandifolia Pericallis x hybrida
Pericallis x hybrida 'Cornflower Blue' Pericallis x hybrida 'Longwood Blue'
Perilla x 'Magilla' Perilla frutescens
Perilla frutescens 'Atropurpurea' Peristrophe hyssopifolia 'Aureo-variegata'