Pseuderanthemum atropurpureum Pseuderanthemum sinuatum 'Tricolor'
Pseudobombax ellipticum Pseudocydonia sinensis
Pseudogynoxys chenopodioides Pseudogynoxys chenopodioides 'Sao Paolo'
Pseudolarix amabilis Pseudopanax ferox
Pseudophoenix crassifolius Pseudophoenix sargentii
Pseudotsuga macrocarpa Pseudotsuga menziesii
Pseudotsuga menziesii 'Densa' Pseudotsuga menziesii 'Fastigiata'
Pseudotsuga menziesii 'Marshall' Psidium cattleianum var. lucidum
Psidium guajava Psidium littorale
Psidium littorale var. longipes Psychotria nervosa
Ptelea trifoliata Ptelea trifoliata 'Aurea'
Pteridium aquilinum Pteris ensiformis
Pteris ensiformis 'Evergemiensis' Pteris ensiformis 'Victoriae'
Pterocarpus indicus Pterocarpus violaceus
Pterocarya forrestii Pterocarya fraxinifolia
Pterocarya macroptera Pterocarya x rehderiana
Pterocarya stenoptera Pterospermum acerifolium
Pterostyrax hispida Ptychosperma angustifolium
Ptychosperma elegans Ptychosperma macarthurii
Pueraria lobata 'Variegata' Pulmonaria x 'Apple Frost'
Pulmonaria x 'Berries & Cream' Pulmonaria x 'Cotton Cool'
Pulmonaria x 'Dark Vader' Pulmonaria x 'Emerald Isles'
Pulmonaria x 'High Contrast' Pulmonaria x 'Little Star'
Pulmonaria x 'Majesty' Pulmonaria x 'May Bouquet'
Pulmonaria x 'Milky Way' Pulmonaria x 'Opal'
Pulmonaria x 'Raspberry Ice' Pulmonaria x 'Raspberry Splash'
Pulmonaria x 'Silver Streamers' Pulmonaria x 'Trevi Fountain'
Pulmonaria x 'Victorian Brooch' Pulmonaria angustifolia
Pulmonaria longifolia 'Bertram Anderson' Pulmonaria longifolia 'Cevennensis'
Pulmonaria longifolia 'Diana Clare' Pulmonaria longifolia 'Excalibur'
Pulmonaria longifolia 'Golden Haze' Pulmonaria longifolia 'Little Blue'
Pulmonaria longifolia 'Roy Davidson' Pulmonaria montana 'Bowles Red'
Pulmonaria montana 'David Ward' Pulmonaria montana 'Redstart'
Pulmonaria officinalis 'Sissinghurst White' Pulmonaria officinalis 'White Wings'
Pulmonaria saccharata Pulmonaria saccharata 'British Sterling'
Pulmonaria saccharata 'Dora Bielefeld' Pulmonaria saccharata 'Highdown'
Pulmonaria saccharata 'Janet Fisk' Pulmonaria saccharata 'Lewis Palmer'
Pulmonaria saccharata 'Margery Fish' Pulmonaria saccharata 'Mrs. Moon'
Pulmonaria saccharata 'Pierre's Pure Pink' Pulmonaria saccharata 'Pink Dawn'
Pulsatilla patens 'Alba' Pulsatilla vulgaris
Pulsatilla vulgaris 'Alba' Pulsatilla vulgaris 'Papageno'
Pulsatilla vulgaris 'Rote Glocke' Pultenaea pedunculata
Pultenaea villosa Punica granatum
Punica granatum 'Mme. Legrelle' Punica granatum 'Nana'
Puschkinia scilloides var. libanotica Putoria littoralis
Puya alpestris Puya coerulea var. violacea
Puya raimondii Pycnanthemum albescens
Pycnanthemum muticum Pycnostachys dawei