Aconitum fischeri (azure monkshood)

Ageratina altissima (white snakeroot)

Allium aflatunense ‘Purple Sensation’ (purple sensation allium)

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

Allium sphaerocephalon (drumstick allium)

Amsonia tabernaemontana var. salicifolia (willow leaf blue star)

Anemone nemorosa (wood anemone)

Arisaema triphyllum (Jack-in-the-pulpit)

Asarum canadense (wild ginger)

Astrantia major ‘Roma’ (masterwort ‘Roma’)