Aconitum fischeri (azure monkshood)

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

Agastache foeniculum (anise hyssop)

Allium azureum (ornamental onion)

Amelanchier laevis (Allegheny juneberry)

Amorpha canescens (lead plant)

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

Amsonia hubrichtii (threadleaf blue star)

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

Amsonia tabernaemontana var. salicifolia (willow leaf blue star)