Penstemon superbus
Penstemon whippleanus
Penstemon x mexicali 'Psmyers'
Pentas lanceolata
Petalostemon purpureum
Phalaris arundinacea var. picta
Phlox paniculata 'Bright Eyes'
Phlox paniculata 'Eventide'
Phlox paniculata 'Franz Schubert'
Phlox paniculata 'Wilhelm Kesselring'
Phlox paniculata cultivars
Physostegia virginiana
Physotegia virginiana 'Miss Manners'
Platycodon grandiflorus
Polemonium reptans
Polygonum affine
Potentilla neumanniana 'Nana'
Pulsatilla vulgaris
Saponaria ocymoides
Sedum 'Autumn Joy'
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