Asclepias curassavica, also known as tropical milkweed, is a species of flowering plant in the milkweed family. It is native to the American tropics and has become a popular garden plant in many parts of the world.

Asarum europaeum, commonly known as European wild ginger, is a low-growing, evergreen perennial plant native to Europe and Asia. It has heart-shaped leaves and produces small, brownish-purple flowers.

Aruncus aethusifolius, commonly known as dwarf goat’s beard, is a flowering perennial plant native to North America. It produces white flowers and has a clumping growth habit.

Arum italicum subsp. italicum marmoratum is a subspecies of Arum italicum, a flowering plant native to the Mediterranean region. It is known for its marbled foliage and white spathe flowers.

Artemisia powis castle is a species of perennial herbaceous plant native to the Middle East. It is known for its attractive silver-gray foliage and its ability to thrive in dry, sunny conditions.

Artemisia ludoviciana valerie finnis, commonly known as Valerie Finnis Sagebrush, is a species of sagebrush native to western North America. It is a hardy, drought-tolerant shrub with attractive silvery-gray foliage.