Aruncus 'Fairy Hair' is a goat's beard that produces sprays of creamy-white flowers above Astilbe-like, highly dissected foliage.

Aruncus 'Guinea Fowl' is a compact and floriferous goat's beard with highly dissected, fern-like, crinkly leaves and horizontal spikes of bright white flowers on red stems.

Asclepias curassavica is a milkweed with blooms in scarlet red and orange.

Asclepias curassavica 'Monarch's Banquet' is a tender variegated milkweed with nectar-rich blooms in bright orange-reds all summer long.

Asclepias curassavica 'Monarch's Promise' is a variegated milkweed with blooms in scarlet red and orange all summer and fall.

Asclepias fascicularis is a monarch butterfly host with intricate pale pink and white flowers.

Asclepias perennis is a butterfly milkweed with white and pink flowers.

Asclepias tuberosa is a hot orange butterfly milkweed native to the Eastern North America where it feeds monarch butterflies.

Asclepias tuberosa 'Blonde Bombshell' is a golden yellow form of this eastern North American butterfly milkweed.

Asclepias tuberosa 'Deep Red' is a North American butterfly milkweed with nectar-rich, dark orange flowers.

Asclepias tuberosa 'Hello Yellow' is an Eastern North American Butterfly milkweed with nectar-rich yellow flowers that feeds Monarch butterflies.

Asclepias verticillata is a rare eastern North American native known as the whorled milkweed.

Asclepias viridis is the green milkweed with large clusters of green petals and purple throats.

Aster macrophyllus ‘Twilight’ forms a groundcover of heart-shaped leaves and late summer clusters of lavender-blue flowers popular with bees and butterflies.

Aster subspicatus (Symphyotrichum subspicatum) has lovely lavender flowers with narrow petals around yellow centres.

Aster 'Bridal Veil' forms a unique cascading and trailing mound covered in thousands of tiny, ivory white flowers in late summer and fall.

Aster divaricatus 'Eastern Star' is a shade aster with jet black stems and clouds of tiny white flowers in fall.

Aster ericoides 'Snow Flurry' is a cold hardy heather aster with masses of late season nectar-rich white flowers.

Aster 'Lady in Black' forms tall stems clad in burgundy foliage that erupt with hundreds of small white and pink flowers in fall.

Aster novae-angliae 'Grape Crush' is a New England aster with purple flowers with orange eyes.

'Raydon's Favourite' forms lush mounds of fragrant foliage smothered with hundreds of gorgeous aster flowers in fall.

Aster pyrenaeus ‘Lutetia’ has soft lavender, narrow-petaled flowers opening from pink buds on purple stems.

Aster x frikartii 'Monch' is one of the best of all asters with a long season from summer to fall of bluish lavender flowers.

Aster Island 'Bahamas' offers deep hot pink flowers with bright yellow centres.