Achillea ‘Moonshine’ (yarrow ‘Moonshine’)

Aconitum carmichaelii ‘Arendsii’ (azure monkshood ‘Arendsii’)

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 ‘Pink Jewel’ (ornamental onion ‘Pink Jewel’)

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’)