September

Persicaria virginiana 'Filiformis Albiflora'

Molinia caerulea 'Jahreslauf'

Molinia caerulea 'Whirlwind'

Aster lateriflorus 'Pink Buttons'

Geranium oxonianum 'Sue Cox'

Phlox 'Donau'

Aster 'Vasterival'

Sedum 'Honey Gold'

Coreopsis 'Johannes'

Artemisia lactiflora 'Elfenbein'

Salvia greggii 'Lipstick'

Agastache 'Fleur'

Aster versicolor 'Altweibersommer'

Cynara scolymus 'Cardy'

Veronicastrum virginicum 'Cupid'

Leucanthemum 'Real Galaxy'

Tricyrtis 'Empress'

Tricyrtis 'Blue Wonder'

Perovskia atriplicifolia 'Lacey Blue'

Liriope muscari 'Lilac Wonder'

Hemerocallis 'Pardon Me'

Helianthus orgyalis

Heliopsis helianthoides 'Goldgefieder'

Eryngium agavifolium

Aster laevis 'Anneke van der Jeugd'

Anemone hybrida 'Lady Gilmour'

Salvia microphylla

Veronicastrum virginicum 'Amethyst'

Salvia greggii 'Blue Note'

Panicum virgatum 'Northwind'

Agastache 'Blue Boa'

Veronicastrum virginicum 'Diana'

Tricyrtis 'Tojen'

Salvia microphylla 'Pink Beauty'

Perovskia atriplicifolia 'Little Spire'

Panicum virgatum 'Dallas Blue'

Origanum 'Bristol Cross'

Liriope muscari 'Ingwersen'

Liriope muscari 'Majestic'

Liriope muscari 'Moneymaker'

Ligularia dentata 'Desdemona'

Lavatera 'Rosea'

Lavatera 'Blushing Bride'

Lavatera 'Bredon Springs'

Kirengeshoma palmata

Heliopsis helianthoides 'Mars'

Helianthus salicifolius

Eupatorium maculatum 'Album'

Boltonia asteroides 'Snowbank'

Helenium 'Monique'

Helenium 'Potter's Wheel'

Helianthus kellermanii

Ruellia humilis

Salvia microphylla 'Gletsjer'

Sporobolus wrightii

Boehmeria spicata

Artemisia lactiflora 'Weiße Dame'

Helenium 'Mien Ruys'

Panicum virgatum 'Nican'

Salvia greggii 'Amethyst Lips'

Salvia greggii 'Caramba'

Salvia greggii 'Cherry Lips'

Salvia greggii 'Lemon Light'

Salvia microphylla 'Blue Monrovia'

Tricyrtis 'Taipei Silk'

Isodon longitubus

Isodon rubescens

Agastache 'Danish Delight'

Echinacea purpurea 'Lakota Orange'

Echinacea purpurea 'Lakota Red'

Helenium 'Amber Dwarf'

Isodon umbrosus 'Dark Form'

Aster spectabilis 'Macho Blue'

Geranium 'Elworthy Eyecatcher'

Helenium 'Fata Morgana'

Helenium 'Flamenco'

Lavandula intermedia 'Sensational'

Helenium 'Ragamuffin'

Agastache mexicana x rupestris 'Duet'

Aster 'Prairie Purple'

Caryopteris clandonensis 'Emerald Crest'

Heliopsis helianthoides 'Prairie Sunset'

Aster ptarmicoides 'Nana'

Pennisetum alopecuroides 'Hameln Gold'

Vernonia noveboracensis 'White Lightning'

Sedum telephium 'Thunderhead'

Helenium 'Short and Sassy'

Sporobolus heterolepis 'Cloud'

Hosta 'Devon Green'

Adenophora 'Gaudi Violet'

Panicum virgatum 'Cloud Nine'

Liriope muscari 'Royal Purple'

Lavatera 'Lilac Lady'

Ceratostigma griffithii

Artemisia 'Canescens'

Aster thomsonii 'Nanus'

Eupatorium rugosum 'Lucky Melody'

Agastache 'Beelicious Purple'

Eragrostis spectabilis 'Purpurflirren'

Lavatera 'Duet'