Horsford Gardens & Nursery

Anthemis tinctoria 'Kelwayi'
Golden Marguerite

ZONES 3-8, HT 24-36", FULL TO PART SUN
An abundance of yellow daisies all summer and into fall. Excellent cutting flower. Pinch plant once during spring and avoid heavier soils.

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 '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 flabellata 'Blue Angel'
Columbine

ZONE 3, HT 12", PART SUN/SHADE
One of our favorite rock garden plants, its nice compact habit works well in tight spaces. Bright violet-blue flowers have a gleaming white center in late spring.

Aquilegia vulgaris 'Clementine Salmon Rose'
Columbine

ZONE 3-9, HT 18", SUN/PART SUN
Unusual and eye-catching spurless flowers that look like miniature double clematis bloom from late spring to early summer. The blossoms start out a salmon rose and age to shades of lavender creating a rich palette. Pair with Polemonium (Jacob's Ladder), Dicentra eximia (Fern-leaf Bleeding Heart) or Amsonia hubrichtii for a great look.

Arabis caucasica 'Snow Cap'
Rock Cress

ZONE 3, HT 6", SUN
This old variety is a show stopper. In early spring the mound of gray-green foliage is covered with white flowers. Perfect in rock gardens and paired with early spring bulbs like scilla.

Arabis sturii
Rock Cress

ZONES 4-7, HT 2", SUN/PART SUN
Covered with dainty white flowers in April and May. Will form a dense clump 6-8" wide for use in the rock garden or trough.

Arabis x arendsii 'Compinkie'
Rock Cress

ZONE 3-8, HT 4-9", SUN
In spring, the deep rose flowers on this dwarf, evergreen plant look great in the rock garden.

Arisaema draconitum
Green Dragon

ZONES 3-8, HT 16-36", PART SHADE
A close relative of Jack-in-the-pulpit, this native to the eastern U.S. is slow to come up in the spring. It blooms June to July with a green flower that resembles a dragon's head, followed by red berries in the fall. It is considered endangered in some areas of New England and is found growing in moist areas, although will do fine in normal garden soil.

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 '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.

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.

Artemisia stelleriana 'Silver Brocade'Artemisia

ZONE 3-10, HT 8-10", SUN
A more compact and serrated form of the native seaside plant. Ghostly silver foliage with prostrate habit. Looks fabulous in fall bouquets! Needs excellent drainage.

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 gound 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.

Asarum europaeum
European Ginger

ZONE 4-8, HT 8", PART SUN/SHADE This wonderful groundcover has dark green, shiny, heart shaped leaves. Given rich, organic soil, sufficient moisture and shade it will spread by rhizomes to form a beautiful carpet. Flowers are inconspicuous, but unusual.

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 divaricatus
White Woodland Aster

ZONE 3-8, HT 18-36", PART SUN/SHADE
A fabulous native plant to add to your woodland garden! Fragrant, white flowers with yellow to pink centers are abundant along black wiry stems from August through September. The dark green leaves are heart shaped and coarsely toothed and not susceptible to mildew. Butterflies love the flowers and deer shouldn't bother them.

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 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 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.