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Aquilegia canadensis
Columbine
ZONES 3-8, HT 24", DAPPLED SHADE
A native American favorite. This wildflower has yellow sepals with red spurs over grayish-green lobed foliage during May and June. Attracts hummingbirds and butterflies.

 
Aquilegia 'Corbett'
Yellow Wild Columbine   

ZONE 3, HT 12-18", SUN/PT SHADE           This is a great perennial for alpine gardens. Butter yellow flowers appear in April and May. Cut back in midsummer to encourage a flush of new growth and to keep foliage fresh looking.


 
Aquilegia hybrida 'Cardinal'
Columbine

ZONE 3-9, HT 24-28", SUN/PT SHADE       This showy variety looks great when naturalized in a woodland border.  Red flowers with white centers are upward facing.  Blooms in late spring and early summer.  Also good for containers.


 
Aquilegia vulgaris 'Clementine Blue'
Columbine

ZONE 2-9, HT 12-18", SUN/PART SUN  
A lovely spring bloomer with upward-facing, dark blue, fully double, spurless flowers. Very floriferous with attractive, blue-gray, lobed leaves. Prefers evenly moist soil.


 
Aquilegia vulgaris 'Clementine Red'
Columbine

ZONE 3, HT 18", SUN/PT SUN        
This early flowering columbine has fuchsia red flowers on upright stems. Foliage is mounding. Perfect for the front of your garden.


 
Aquilegia vulgaris 'Tower Dark Blue'
Columbine

ZONE 3, HT 20", SUN/PT SUN        
The deep blue violet blooms of this perennial will add intrigue to your garden. Also a great plant for container gardening. Attracts butterflies, hummingbirds, and is a long-lasting cut flower.


 
Aquilegia x c. 'Oragami Mix'
Columbine

ZONE 3, HT 14-18", SUN/PT SHADE        
A great choice for perennial gardens and containers alike. Begins blooming in late spring. Upward facing flowers are a variety of colors including red, white, yellow, and blue. Blooms for several weeks longer than other varieties.


Arisaema triphyllum
Jack-in-the-Pulpit

ZONE 4-8, HT 18-24", SHADE         
A unique native wildflower, known and loved by everyone. The unusual 4-7 inch, green and purple flower is tubular with a blade bent over the opening and appears in early to mid spring. Red berries appear 5-6 months after flowering. Plant in shady, moist areas.


 
Armeria maritima 'Rubrifolia'
Thrift

ZONE 3, HT 8", SUN      
This mound forming perennial is well suited for the rock garden or a perennial bed with very well drained soil. Mounding foliage is needle like, green, and glossy. Flowers are held above foliage on short stems. They appear as little pink pom-poms in spring.


Armeria maritima 'Bloodstone'
Thrift

ZONE 3-8, HT 6-8", SUN     
A long blooming sea thrift with dark rose-red, ball-shaped flowers from mid spring to early summer. The tight mounds of grass-like foliage are evergreen and drought tolerant. Also tolerates high salt levels.


Armeria maritima 'Cotton Tail'
Thrift

ZONE 3-8, HT 8", SUN/PART SUN 
White spherical flowers bloom over grass-like foliage in spring and sporadically throughout the summer. Adorable with Veronica allionii.


Oriental Limelight
Artemisia 'Oriental Limelight'     Mugwort         

ZONE 3-11, HT 12-36", SUN           
Deeply-cut, green leaves are variegated with cream and yellow. Mounding, self-branching habit makes this an ideal companion for flowering plants. Use in a container or give it lots of room because it likes to spread out!


Artemisia schmidtiana 'Silver Mound'
Artemisia
ZONES 3-7, HT 12", SUN
A favorite foliage plant for the front of the perennial border. Soft fern-like silver-gray foliage. Prune to the ground when you see new growth coming from the base in early August and the new foliage will quickly flush out and make a more attractive plant.

Aruncus aethusifolius
Dwarf Goat's Beard

ZONE 3-7, HT 8", PART SUN/SHADE         This dwarf variety has the same creamy white flowers as the other goat's beards but on a compact plant. Use in the shade garden to add late summer color and a texture contrast to your hosta. Over time this plant forms an attractive mound that you want to stop and pet!


Aruncus dioicus
Goat's Beard

ZONE 3-7, HT 5-6', PART SUN       
This plant can be found growing deep in the nursery woods. The leaves are dark green and the tall plumes are creamy white in early to mid summer. It looks like a giant astilbe! Prefers moist soil. This plant is a great solution for an east-facing foundation planting: it provides height for three seasons but dies to the ground for winter, thus not damaged by falling snow and ice.


Asarum canadense
Wild Ginger

ZONE 2-8, HT 6", SHADE    
A ground hugging perennial with glossy heart-shaped foliage. Wild ginger prefers rich soil and ample moisture. Excellent in woodland gardens and a very effective ground cover. In spring, look under the leaves for the unusual purple-brown, nut-like flowers. They lay on the ground so beetles will pollinate them.


Asclepias incarnata      
Swamp Milkweed 
      

ZONE 5, HT 24-48", SUN     
This Vermont native belongs to the same genus as the ever popular Butterfly Weed. This native species is more adaptable to a variety of soil conditions and provides both an aesthetic and utilitarian purpose. Dusty pink flowers appear in summer. Use the fresh cut flowers or dried seed pods in floral arrangements or enjoy watching the butterflies and hummingbirds that will grace your garden to feed from this perennial.


Butterfly Weed
Asclepias tuberosa       
Butterfly Weed

ZONE 3-9, HT 12-18", SUN 
Bright orange flowers bloom against dark green foliage all summer. A must for the sunny border and the butterflies. Prefers well drained soils and is drought tolerant. Use as a cut flower.


Aster alpinus      
Alpine Aster
      

ZONE 3, HT 6-12", SUN/PT SUN   
Flowers in shades of lavender, blue and pink.  Blooms late spring and early summer.  Great for rock gardens, stone walls, or the front of the garden.


Aster azureus
Sky Blue Aster
ZONE 3, HT 2-3', SUN/PART SUN
This prairie native is covered with beautiful, sky-blue flowers from August into October. Use in your meadow with Boltonia, Solidago and Filipendula. Grows well in almost any soil from dry sand to moist loam.

Aster dumosus 'Wood's Pink'
Bushy Aster

ZONE 3-8, HT 12-16", SUN 
In autumn, this plant is covered with small, clear pink flowers with yellow eyes. This North American native requires no staking, and is almost completely mildew and rust-free.


Aster dumosus 'Wood's Purple'
Bushy Aster

ZONE 3-8, HT 12-16", SUN 
The delicate, dark green foliage is attractive all summer and finishes the season covered with purple flowers in the fall. A native of North America.


Aster ericoides 'Lovely'      
Heath Aster
      

ZONE 3, HT 36-48", SUN
This Aster grows similarly to a spreading evergreen shrub. Woody arching stems with mildew resistant foliage is literally covered with masses of tiny pink-violet daisy-like flowers in September. Low maintenance, drought tolerant, and attracts butterflies!


Aster laevis 'Bluebird '
Smooth Aster

ZONE 3-8, HT 40", SUN       
Rich violet-blue daisies with bright yellow centers adorn this aster from August through September. A sturdy, mildew-resistant plant that does not need staking. Tolerates all but wet soils.


Aster lateriflorus 'Prince'  
Calico Aster
      

ZONE 3-8, HT 15", SUN
An improved selection with deep purple foliage making this plant attractive, even when it is not in flower. Tiny, white daisies have raspberry centers. Water well when blooms are forming, August through September.


Aster novae-angliae 'Alma Potschke'
New England Aster
ZONES 3-8, HT 3-5', SUN
Beautiful red-pink flowers. Blooms late summer to fall when your garden is begging for vibrant color.

Aster novae-angliae 'Purple Dome'
New England Aster
ZONES 3-8, HT 18", SUN
When planted in a sunny location where they can receive plenty of water, New England asters are easy to grow. 'Purple Dome' has masses of purple daisies from late summer well into fall. A classic combination with Sedum 'Autumn Joy' and your favorite goldenrod.

Aster novae-angliae 'September Ruby'
New England Aster
      

ZONE 3, HT 48", SUN
Crimson blooms cover this Aster in late summer and fall. Great for meadow plantings or for the back of the perennial garden. Also good for roadside plantings as it is salt tolerant. Prefers well drained soil but is tolerant of wet, clay soils. Attracts butterflies but not rabbits.


Aster oblongifolius 'Dream of Beauty'
Fragrant Aster
      

ZONE 4, HT 12", SUN
A vigorous low spreader, forming a dense carpet of blooms in fall. Flowers are light pink with burnt orange centers. One plant can spread up to 2'. Tolerates most soil types, including clay.



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