| Pachysandra terminalis |
| Paeonia "Shimaidajin" |
| Paeonia "Yachiyo-tsubaki" |
| Panicum virgatum "Heavy Metal" |
| Panicum virgatum "Rehbraun" |
| Panicum virgatum "Shenandoah" |
| Panicum virgatum "Squaw" |
| Panicum virgatum "Strictum" |
| Panicum virgatum "Warrior" |
| Papaver miyabeianum |
| Papaver nudicaule "Gartenzwerg" |
| Papaver "Karine" |
| Papaver "Prinzessin Viktoria Louise" |
| Paradisea J.v.K |
| Paradisea liliastrum |
| Paradisea liliastrum "Major" |
| Parnassia palustris |
| Paxistima cambyi |
| Peltoboykinia watanabei |
| Pennisetum alopecuroides |
| Pennisetum alop. "Hameln" |
| Pennisetum alop. "Woodside" |
| Pennisetum orientale "Tall Tails" |
| Pennisetum orient. Karley Rose" |
| Pennisetum viridescens |
| Penstemon "Appleblossom" |
| Penstemon "Blue Bedder" |
| Penstemon "Garnet" |
| Penstemon "Ospray" |
| Penstemon "Rich Ruby" |
| Penstemon "Thorn" |
| Penstemon "White Bedder" |
| Penstemon campanulatus |
| Penstemon hirsutus "Pygmaeus" |
| Penstemon pinifolius |
| Perovskia "Blue Spire" |
| Persicaria "Inverleith" |
| Persicaria "Donald Lowndes" |
| Persicaria "Superba" |
| Persicaria ampl "High Society" |
| Persicaria bistorta "Hohe Tatra" |
| Persicaria campanulata |
| Persicaria "Red Dragon" |
| Persicaria milletii |
| Persicaria paleacea |
| Persicaria vaccinifolia |
| Persicaria vivipara |
| Petrorhagia saxifraga |
| Phalaris arundinacea "Picta" |
| Philadelphus |
| Phlomis JvK |
| Phlomis russeliana |
| Phlomis tuberosa "Amazone" |
| Phlox "Laura" |
| Phlox "Ronsdorfer Schöne" |
| Phlox "Spring Pearl Miss Jill" |
| Phlox (D) "Crackerjack" |
| Phlox (D) "Georg Arends" |
| Phlox divaricata |
| Phlox divaricata "Blue Dreams" |
| Phlox divaricata "Clouds of Perfume" |
| Phlox divaricata "Lilac Cloud" |
| Phlox maculata "Reine du Jour" |
| Phlox paniculata "Blue Paradise" |
| Phlox paniculata "Bright Eyes" |
| Phlox paniculata "Casablanca" |
| Phlox paniculata "Düsterlohe" |
| Phlox paniculata "Hesperis" |
| Phlox paniculata "Kirmesländler" |
| Phlox paniculata "Lichtspel" |
| Phlox paniculata "Rosa Pastell" |
| Phlox paniculata "Starfire" |
| Phlox paniculata "Sternenhimmel" |
| Phlox paniculata "Uspech" |
| Phlox paniculata "Utopia" |
| Phlox paniculata "Van Gogh" |
| Phlox paniculata "Windsor" |
| Phlox paniculate "Flamingo" |
| Phlox procumbens "Rosea" |
| Phlox stolonifera "Violet Vere" |
| Phlox sub. "Benita" |
| Phlox sub. "Emerald Cushion Blue" |
| Phlox sub. "McDaniel's Cushion" |
| Photinia fraseri "Red Robin" |
| Phuopsis stylosa |
| Phyla nodiflora (Lippia) |
| Physocarpus opulifolius "Diabolo" |
| Physostegia virg. "Bouquet Rose" |
| Phyteuma scheuchzeri |
| Picea glauca "Cupido" |
| Pieris japonica "Little Heath" |
| Pimpinella major var. Rosea |
| Pinus cembra |
| Pinus leuc. Schmidtii |
| Pinus mugo "Humpy" |
| Pinus strobus "Densa" |
| Platycodon "Fuji Pink" |
| Platycodon "Shell Pink" |
| Platycodon grandiflorus |
| Platycodon "Perlmutterschale" |
| Platycodon "Albus" |
| Poa labihadierei |
| Podophyllum hexandrum |
| Polemonium carneum |
| Polemonium reptans "Blue Pearl" |
| Polygala cham."Grandiflora" |
| Polygonatum humile |
| Polygonatum multiflorum |
| Polygonatum odoratum |
| Polygonum filiforme "Firetale" |
| Polygonum ampl. "Firedance" |
| Polygonum ampl. "Roseum" |
| Polygonum polymorphum |
| Polystichum "Herrenhausen" |
| Potentilla "Arabesque" |
| Potentilla "Gibson's Scarlet" |
| Potentilla "Mystery Red" |
| Potentilla "Volcan" |
| Potentilla "Yellow Queen" |
| Potentilla argentea ssp. Calabra |
| Potentilla astra sanguinea "Rot" |
| Potentilla eriocarpa |
| Potentilla fruticosa "Goldfinger" |
| Potentilla hypatica |
| Potentilla megalantha "Majlands" |
| Potentilla nep. "Helen Jane" |
| Potentilla nep. "Ron McBeath" |
| Potentilla neumanniana "Nana" |
| Potentilla "Monarch's Velvet" |
| Potentilla tridentata "Lemon Mac" |
| Potentilla tridentata "Nuuk" |
| Potentilla x hopwoodiana |
| Potentilla x tonguei |
| Primula auricula "Liga's Smile" |
| Primula carniolica |
| Primula juliae "Wanda" |
| Primula mark |
| Primula pubescens |
| Primula sieboldii |
| Primula veris |
| Primula "Guinevere" |
| Prunella grandiflora "Carminea" |
| Prunella grandiflora "Loveliness" |
| Prunella Ubbink |
| Prunus serrulata "Amanogawa" |
| Pterocephalus parnassi |
| Ptilotrichum spinosum "Purpureum" |
| Pulmonaria "Majestee" |
| Pulmonaria "Opal" |
| Pulmonaria ang."Blue Ensign" |
| Pulsatilla vulg. "Alba" |
| Pulsatilla vulg. "Eva Constance" |
| Pulsatilla vulg. "Papageno" |
| Pyrus calleryana "Chanticleer" |