Clay, chalk, sandy & acidic soil

Nerine bowdenii 'Vesta K'

Bowden lily

Oenothera 'Crown Imperial'

Evening primrose

Oenothera 'Give Me Sunshine'

Evening primrose

Oenothera macrocarpa

Ozark sundrops, Missouri evening primrose

Omphalodes verna

Creeping forget-me-not, Creeping navelseed

Omphalodes verna 'Alba'

Creeping forget-me-not, Creeping navelseed

Origanum laevigatum

Marjoram, Marjory, Showy oregano, Smooth leaved oregano

Osteospermum 'Senorita® Quinty'

African daisy, Cape maguerite

Oxalis spiralis vulcanicola 'Sunset Velvet'

Spiral, Volcanic sorrel

Oxalis versicolor

Sugarstick sorrel

Oxalis Xalis™ Black Velvet = 'JR OXBLAVEL'

Sorrel

Paeonia 'Julia Rose'

Peony

Panicum virgatum 'Dallas Blues'

Blue switch grass

Panicum virgatum 'Hanse Herms'

Switch grass, Wild red top thatch grass, Wobsqua grass, Black bent grass

Panicum virgatum 'Heavy Metal'

Switch grass, Wild red top thatch grass, Wobsqua grass, Black bent grass

Panicum virgatum 'Northwind'

Switch grass, Wild red top thatch grass, Wobsqua grass, Black bent grass

Panicum virgatum 'Shenandoah'

Red switch grass

Papaver nudicaule Garden Gnome Group

Icelandic poppy, Arctic poppy

Pelargonium 'Flower Fairy Strawberry'

Tender geranium

Pelargonium Bella Donna Angel Parfum® 'Senna'

Tender geranium

Pelargonium x hortorum 'Galaxy™ Dark Red'

Zonal pelargonium

Pennisetum setaceum 'Cherry Sparkler'

Fountain grass

Penstemon 'Cherry'

Beard tongue

Penstemon 'Flock of Flamingos'

Beard tongue

Penstemon 'Ice Cream™ Blackberry'

Beard tongue

Penstemon 'Ice Cream™ Sweet Cherry'

Beard tongue

Penstemon 'Onyx and Pearls'

Beard tongue

Penstemon 'Pensham Just Jayne'

Beard tongue

Penstemon 'Pentastic Pink'

Beard tongue

Penstemon 'Pentastic Red'

Beard tongue

Penstemon 'Pentastic Rose'

Beard tongue

Penstemon 'Purple Perfection'

Beard tongue

Penstemon digitalis 'Pocahontas'

Foxglove penstemon, Foxglove beard tongue

Penstemon Harlequin Magenta = 'Tnpenhm'

Beard tongue

Penstemon Harlequin Pink = 'Tnpenhpi'

Beard tongue

Penstemon Phoenix Appleblossom 09 = 'PeniAblos09'

Beard tongue

Perovskia atriplicifolia 'Crazy Blue'

Russian sage

Perovskia atriplicifolia 'Prime Time'

Russian sage

Persicaria runcinata 'Purple Fantasy'

Knotweed

Philadelphus 'Manteau d'Hermine'

Mock orange

Philadelphus coronarius 'Variegatus'

Sweet mock orange, Garland spindle

Phlomis tuberosa 'Amazone'

Tuberous phlomis, Jerusalem sage, Sage-leaf mullein

Phlox 'Bedazzled Lavender'

Hybrid spring phlox, Creeping phlox

Phlox 'Magenta Sprite'

Spring phlox

Phlox 'Rose Sprite'

Spring phlox

Phlox Bambini Primadonna = 'Verpri'

Perennial phlox

Phlox paniculata 'Olympus'

Phlox paniculata 'Opening Act Blush'

Border phlox