Acanthus mollis ‘Rue Ledan’ (bear’s breeches ‘Rue Ledan’)

Achillea ‘Moonshine’ (yarrow ‘Moonshine’)

Aconitum henryi ‘Spark’s Variety’ (monkshood ‘Spark’s Variety)

Actaea ‘Queen of Sheba’ (bugbane ‘Queen of Sheeba’)

Allium aflatunense ‘Purple Sensation’ (purple sensation allium)

allium lusitanicum ‘Summer Beauty’ (allium ‘Summer Beauty’)

Amsonia ‘Blue Ice’ (blue star ‘Blue Ice’)

Amsonia tabernaemontana ‘Fontana’ (blue star ‘Fontana’)

Andropogon gerardii ‘Blackhawks’ (big bluestem ‘Blackhawks’)

Andropogon gerardii ‘Red October’ (big bluestem ‘Red October’)