Shrubs and trees:

Azalea

Beautybush

Buckeyes

Butterfly bush

Chaste tree (vitex)

Glossy abelia

Hardy hibiscus

Mimosa

Wisteria

Flowers:

Ajuga

Bee balm

Begonia

Bellflower

Black-eyed Susan

Butterfly weed

Cardinal flower

Catmint

Cleome

Columbine

Coral bells

Daylily

Flowering tobacco

Gaillardia

Hollyhock

Hosta

Lantana

Petunia

Purple coneflower

Salvia

Verbena

Source: New York/Mid-Atlantic

Gardener's Book of Lists