Aconitum fischeri (azure monkshood)

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

Allium caesium (light blue garlic)

Amelanchier laevis (Allegheny juneberry)

Amorpha canescens (lead plant)

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

Amsonia hubrichtii (threadleaf blue star)

Amsonia tabernaemontana var. salicifolia (willow leaf blue star)

Anemone blanda ‘Blue Shades’ (Grecian windflower ‘Blue Shades’)

Anemone nemorosa ‘Royal Blue’ (wood anemone ‘Royal Blue’)