August

Tricyrtis 'Blue Wonder'

Perovskia atriplicifolia 'Lacey Blue'

Liriope muscari 'Lilac Wonder'

Hemerocallis 'Pardon Me'

Helianthus orgyalis

Heliopsis helianthoides 'Goldgefieder'

Eryngium agavifolium

Anemone hybrida 'Lady Gilmour'

Acanthus hungaricus 'White Lips'

Salvia microphylla

Veronicastrum virginicum 'Amethyst'

Salvia greggii 'Blue Note'

Panicum virgatum 'Northwind'

Agastache 'Blue Boa'

Erigeron 'Sommerabend'

Veronica longifolia 'White Jolanda'

Veronicastrum virginicum 'Diana'

Tricyrtis 'Tojen'

Salvia verticillata 'Hannay's Blue'

Salvia microphylla 'Pink Beauty'

Perovskia atriplicifolia 'Little Spire'

Panicum virgatum 'Dallas Blue'

Origanum 'Bristol Cross'

Ligularia stenocephala 'The Rocket'

Liriope muscari 'Ingwersen'

Liriope muscari 'Majestic'

Liriope muscari 'Moneymaker'

Ligularia dentata 'Desdemona'

Lavatera 'Rosea'

Lavatera 'Blushing Bride'

Lavatera 'Bredon Springs'

Kirengeshoma palmata

Hosta 'Patriot'

Hosta 'Big Daddy'

Hosta 'Krossa Regal'

Heliopsis helianthoides 'Mars'

Helianthus salicifolius

Eupatorium maculatum 'Album'

Eryngium bourgatii

Erigeron 'Dunkelste Aller'

Boltonia asteroides 'Snowbank'

Astilbe 'Prof. van der Wielen'

Aconitum napellus 'Album'

Helenium 'Monique'

Helenium 'Tom'

Geranium 'Rothbury Red'

Erigeron 'Quakeress'

Acanthus 'Summer Beauty'

Galtonia candicans

Helenium 'Kupfersprudel'

Helenium 'Potter's Wheel'

Helianthus kellermanii

Leucanthemum 'Stina'

Ruellia humilis

Salvia microphylla 'Gletsjer'

Sporobolus wrightii

Stachys officinalis 'Saharan Pink'

Veronica longifolia 'Blue John'

Veronica longifolia 'Lila Karina'

Veronica longifolia 'Sonja'

Boehmeria spicata

Artemisia lactiflora 'Weiße Dame'

Helenium 'Mien Ruys'

Hosta 'Barbara Ann'

Monarda 'Grape Gumball'

Panicum virgatum 'Nican'

Penstemon strictus

Salvia greggii 'Amethyst Lips'

Salvia greggii 'Caramba'

Salvia greggii 'Cherry Lips'

Salvia greggii 'Lemon Light'

Salvia microphylla 'Blue Monrovia'

Santolina serratifolia

Tricyrtis 'Taipei Silk'

Veronica longifolia 'Rote Zora'

Isodon rubescens

Agastache 'Danish Delight'

Astilbe 'Betsy Cuperus'

Echinacea purpurea 'Lakota Orange'

Echinacea purpurea 'Lakota Red'

Helenium 'Amber Dwarf'

Isodon umbrosus 'Dark Form'

Muehlenbeckia complexa 'Golden Girl'

Aster spectabilis 'Macho Blue'

Geranium 'Elworthy Eyecatcher'

Helenium 'Fata Morgana'

Helenium 'Flamenco'

Hemerocallis 'Purissima'

Lavandula intermedia 'Sensational'

Helenium 'Ragamuffin'

Agastache mexicana x rupestris 'Duet'

Allium lusitanicum 'Blue Eddy'

Hosta 'Grand Tiara'

Aster 'Prairie Purple'

Achillea decolorans

Campanula lactiflora 'Assendon Pearl'

Caryopteris clandonensis 'Emerald Crest'

Heliopsis helianthoides 'Prairie Sunset'

Aster ptarmicoides 'Nana'

Pennisetum alopecuroides 'Hameln Gold'