Acanthus spinosus (bear’s breeches)

Achillea ‘Moonshine’ (yarrow ‘Moonshine’)

Aconitum fischeri (azure monkshood)

Actaea simplex ‘James Compton’ ( bugbane ‘James Compton’)

Agastache ‘Blue Fortune’ (giant hyssop ‘Blue Fortune’)

Ageratina altissima ‘Chocolate’ (white snakeroot ‘Chocolate’)

Allium aflatunense ‘Purple Sensation’ (purple sensation allium)

Allium atropurpureum (ornamental onion)

Allium caesium (light blue garlic)

Allium carinatum subsp. pulchellum (keeled garlic)