Just because summer is coming to an end doesn't mean that colorful flowers are too.
Apache Sunset Hyssop Agastache rupestris 'Apache Sunset'
Butterfly-Bush Buddleja davidii 'Harlequin'
Purple Coneflower Echinacea purpurea
Sunflower Helianthus annuus
Hartweg's Penstemon Penstemon hartwegii 'Giganteus'