The plants

Bluestarnon-native

Amsonia 'Blue Ice'

···▃█▃······   Blooms Apr–Jun

Catmintnon-native

Nepeta × faassenii 'Blue Wonder'

····▃█▃▃▃···   Blooms May–Sep

Coneflowernon-native

Echinacea 'Hot Papaya'

·····▃█▃····   Blooms Jun–Aug

Woolly Thymenon-native

Thymus pseudolanuginosus

·····█▃·····   Blooms Jun–Jul

Anise Hyssopnon-native

Agastache 'Black Adder'

······▃█▃▃··   Blooms Jul–Oct

Ginkgo (Maidenhair Tree)non-native

Ginkgo biloba 'Autumn Gold'

············   No bloom recorded