- Paederota bonarota
- Paederota bonarota
- Paeonia cambessedesii
- Papaver suaveolens
- Paraquilegia grandiflora
- Paris cronquisti
- Paris sp S-118 China
- Paronychia albanica ssp graeca M. Parnassos
- Paronychia aretioides col Trevenque
- Paronychia aretioides kl 1 col Trevenque
- Paronychia sp
- Pelargonium endlicherianum
- Pellaea atropurpurea
- Penstemon aridus
- Penstemon davidsonii ssp menziesii
- Penstemon debilis
- Penstemon eriantherus dwarf
- Penstemon hallii
- Penstemon pygmaeus alba
- Penstemon rupicola
- Penstemon rupicola ‘Puyallup’
- Penstemon sp
- Perezia pilifera
- Pernettya mucronata
- Pernettya mucronata ‘Kirsten’
- Petrocallis pyrenaica
- Petrocallis pyrenaica alba
- Petrophytum caespitosum
- Petrophytum caespitosum ‘Red Anthers’
- Petrophytum hendersonii
- Petunia patagonica
- Petunia repens
- Phlox ‘Alenka’
- Phlox ‘Apollo’
- Phlox ‘Boranovic’
- Phlox ‘Cracker Jack’
- Phlox ‘Dolni Pena’
- Phlox ‘Franto’
- Phlox ‘Karkulka’
- Phlox ‘Lemhi Purple’