White flowers

Parahebe lyallii 'Snowcap'

Lyall's parahebe

Passiflora incarnata 'Cooltropics® Snowstar®'

Apricot vine

Pennisetum 'Tiny Tails'

Fountain grass

Pennisetum alopecuroides 'Weserbergland'

Fountain grass, Swamp foxtail grass, Chinese pennisetum, Chikara shiba

Pennisetum orientale 'Tall Tails'

Oriental fountain grass, Fountain grass

Penstemon 'Osprey'

Beard tongue

Penstemon 'Thorn'

Beard tongue

Penstemon 'Vanilla Plum'

Beard tongue

Penstemon hirsutus var. pygmaeus f. albus

White-flowered hairy beard tongue

Perilla

Beefsteak plant

Perilla frutescens var. crispa

Beefsteak plant, Shiso

Persicaria amplexicaulis 'Alba'

Mountain fleece, Red bistort

Persicaria mollis

Soft-leaved knotweed

Persicaria polymorpha

Variable knotweed

Petasites fragrans

Winter heliotrope, Scented coltsfoot

Petasites japonica var. giganteus

Giant butterbur, Fuki, Japanese butterbur

Petroselinum crispum

Parsley, Moss curled parsley

Petunia 'Amore Pink Heart'

Petunia Blueberry Star = 'USTUNJ1801'

Trailing petunia

Petunia Easy Wave White = 'Pas760712'

Petunia Surfinia Blue Vein = 'Sunsolos'

Petunia Surfinia White = 'Kesupite'

Petunia Vista® Silverberry = 'EDV BUBBLEGUM'

Trailing petunia

Philadelphus

Mock orange

Philadelphus 'Lemoinei'

Lemoine philadelphus

Philadelphus 'Manteau d'Hermine'

Mock orange

Philadelphus 'Sybille'

Mock orange

Philadelphus coronarius

Sweet mock orange, Garland spindle

Philadelphus coronarius 'Variegatus'

Sweet mock orange, Garland spindle

Philadelphus microphyllus

Little leaf Mock orange

Philadelphus Mirador = 'Debaroo'

Mock orange, Syringa

Philadelphus x 'Petite Perfume White'

Mock orange, Syringa

Philadelphus x hybrida 'Fragrant Falls'

Mock orange

Phillyrea

Mock privet, Jasmine box

Phillyrea angustifolia

Mock privet, Jasmine box

Phlox douglasii 'Ice Mountain'

Alpine phlox, Moss phlox

Phlox douglasii 'White Admiral'

Alpine phlox, Moss phlox, Columbia phlox

Phlox maculata 'Natascha'

Meadow phlox, Wild sweet William, Spotted phlox, Early phlox

Phlox maculata 'Reine du Jour'

Meadow phlox, Wild Sweet William, Spotted phlox, Early phlox

Phlox paniculata 'Alba Grandiflora'

Border phlox, Summer phlox

Phlox paniculata 'Blue Ice'

Border phlox, Summer phlox

Phlox paniculata 'David'

Border phlox, Summer phlox

Phlox paniculata 'Jade'

Border phlox, Summer phlox

Phlox paniculata 'Mount Fuji'

Border phlox, Perennial phlox, Summer phlox, Autumn phlox, Fall phlox

Phlox paniculata 'Opening Act Pink-A-Dot'

Border phlox

Phlox paniculata 'Opening Act White'

Border phlox

Phlox paniculata 'Peacock White'

Border phlox, Summer phlox

Phlox paniculata 'Rembrandt'

Border phlox, Summer phlox