How tall do you want the plants to get? Hibiscus and crapemyrtles are both taller, easy to care for flowering shrubs. I also love both vitex and butterfly bushes. They have fragrant flowers that the butterflies love and perfect for butterfly and hummingbird gardens. And, don’t forget Sapphire Surf Caryopteris! It is a low growing shrub that flowers late summer. This should help get you started and please explore other plants for zone 8 gardens.
Thanks for writing!