Parkinsonia aculeata Parkinsonia aculeata x microp 'Desert Museum'
Parkinsonia florida Parkinsonia microphylla
Parkinsonia praecox Parkinsonia texana
Parodia claviceps Parodia erinacea
Parodia leninghausii Parodia magnifica
Parodia rubellihamata Parodia tephracantha
Parodia warasii Parrotia persica
Parrotia persica 'Pendula' Parthenocissus henryana
Parthenocissus himalayana Parthenocissus quinquefolia
Parthenocissus quinquefolia 'Engelmannii' Parthenocissus quinquefolia 'Star Showers'
Parthenocissus quinquefolia 'Troki (Red WallŪ)' Parthenocissus quinquefolia 'Variegata'
Parthenocissus quinquefolia 'Yellow Wall' Parthenocissus tricuspidata
Parthenocissus tricuspidata 'Fenway Park' Passiflora 'Coral Glow'
Passiflora 'Incense' Passiflora caerulea
Passiflora caerulea 'Constance Eliott' Passiflora coccinea
Passiflora edulis Passiflora incarnata
Passiflora lutea Passiflora vitifolia
Patersonia drummondii Patrinia scabiosifolia
Paulownia fargesii Paulownia fortunei
Paulownia kawakamii Paulownia tomentosa
Pavonia lasiopetala Paxistima canbyi
Pedicularis canadensis Pedilanthus tithymaloides ssp. smallii
Pelargonium 'Citronella' Pelargonium 'Coconut'
Pelargonium 'Emerald Mint' Pelargonium 'Fireworks Red and White Bicolor'
Pelargonium 'Ginger' Pelargonium 'Green Lime'
Pelargonium 'Little Gem' Pelargonium 'Mini Rose'
Pelargonium 'Mrs. Taylor' Pelargonium 'New Spice'
Pelargonium 'Nutmeg' Pelargonium 'Old Fashioned Rose'
Pelargonium 'Red Flower Rose' Pelargonium 'Snowflake Rose'
Pelargonium 'Strawberry' Pelargonium cordifolium
Pelargonium crispum Pelargonium x domesticum 'Aztec'
Pelargonium x domesticum 'Ballerina' Pelargonium x domesticum 'Delilah'
Pelargonium x domesticum 'Flair' Pelargonium x domesticum 'Martha Washington'
Pelargonium x fragrans Pelargonium frutetorum 'Grace'
Pelargonium fulgidum Pelargonium graveolens 'Apple'
Pelargonium graveolens 'Apricot' Pelargonium graveolens 'Attar of Roses'
Pelargonium graveolens 'Chocolate Mint' Pelargonium graveolens 'Green Apple'
Pelargonium graveolens 'Herbal Rose' Pelargonium graveolens 'Lime'
Pelargonium graveolens 'Peppermint' Pelargonium graveolens 'Prince Rupert'
Pelargonium graveolens 'Staghorn Oak' Pelargonium graveolens 'Variagated Mint Rose'
Pelargonium x hortorum Pelargonium x hortorum 'Freckles'
Pelargonium x hortorum 'Maverick Scarlet' Pelargonium x hortorum 'Orbit Hot Pink'
Pelargonium x hortorum 'Picasso' Pelargonium x hortorum 'Pink Expectations'
Pelargonium x hortorum 'Red Hots' Pelargonium x hortorum 'Rio'
Pelargonium x hortorum 'Tricolor' Pelargonium x hortorum 'Tweedle Dee'
Pelargonium ionidiflorum 'Pink Fairy Cascade' Pelargonium peltatum
Pelargonium peltatum 'Black Magic' Pelargonium peltatum 'Colorcade Lavender'
Pelargonium peltatum 'Crocodile' Pelargonium peltatum 'Sunset'
Pelargonium quercifolium Pelargonium radens
Pelargonium reniforme Pelargonium ribifolium
Pelargonium sidoides Pelargonium tomentosum
Pelargonium tricolor