Hardiness Zones / 6
Based on the minimum ten-year average winter temperatures, plant hardiness zones maps have been progressively developed, first by the Department of Agriculture (USDA) for the United States and then more or less applied to the rest of the planet. The purpose of these hardiness zones is to identify how well plants will withstand the cold winter temperatures of these zones. The USDA Hardiness Zone Map divides North America into 13 zones of 10°F each, ranging from -60°F (-51°C) to 70°F (21°C). The range of minimum average temperatures for zone 6 is between -10°F and 0°F or -23.3°C and -17.8°C. If you are planning to buy a shrub, perennial or tree, you need to make sure that this new plant will tolerate year-round conditions in your area. Therefore, to ensure your new acquisition will survive and grow year after year, you will need to compare the hardiness zone of your area with the hardiness zone of your plant (included in most American references books, nursery catalogs and gardening magazines describing plants).
Salvia azurea var. grandiflora (Pitcher Sage) is a clump-forming, shrubby perennial with beautiful wands of sky blue flowers, up to 12 in. long (30 cm). Blooming from midsummer to frost, the elegant flowering wands are borne on slender stems clad with long, narrow, grayish-green leaves. Hardy, this Salvia enjoys an upright habit until midsummer, but will sprawl over nearby plants when it begins to bloom.
Award-winning Abelia 'Edward Goucher' is a compact, semi-evergreen shrub with upright, gracefully arching stems bearing glossy, oval, dark green leaves with a bronze tinge when young. In midsummer, abundant clusters of lilac-pink, funnel-shaped flowers adorn the bush until fall. Their attractive bronze-tinged calyces further enrich the display and persist well after the flowers fall.
Noted for its stable variegated foliage, award-winning Abelia x grandiflora 'Hopleys' is a compact, semi-evergreen shrub with a luminous foliage of bright green leaves adorned with buttery yellow edges in spring, gradually fading to ivory-white. The glossy oval leaves are highly decorative and turn pink in the fall. In midsummer, abundant clusters of lightly-scented, lilac-tinged white flowers adorn the bush until fall.
Changing color over the seasons, Abelia × grandiflora 'Kaleidoscope' (Glossy Abelia) is a dwarf, variegated, semi-evergreen shrub. Emerging bright yellow and lime-green in spring, its glossy oval leaves turn golden yellow in summer before taking on glowing orange and fiery red hues in fall. The leaf coloration does not burn or scorch in the hottest of weather.
Changing color over the passing seasons, Abelia × grandiflora 'Mardi Gras' (Glossy Abelia) is a compact, low growing, spreading, semi-evergreen shrub. Borne on pink to red stems, its glossy oval leaves emerge bright pink in spring, mature to sparkling creamy white and green as the season progresses before taking on coppery shades in the fall.
Vigorous, Abelia × grandiflora 'Radiance' (Glossy Abelia) is a compact, dense, semi-evergreen shrub with vivid crimson stems contrasting the white variegated foliage. Emerging medium green with creamy yellow margins in spring, the glossy oval leaves soften to silvery-green with creamy white margins as the season progresses.
Abelia × grandiflora (Glossy Abelia) is a medium-sized, rounded, semi-evergreen shrub with gracefully arching branches, densely clothed with small glossy oval, dark green leaves and clusters of pink-tinged, white, bell-shaped flowers. Slightly fragrant, the blooms are produced continuously cover a long period extending from late spring to fall. The foliage turn purplish-bronze in the fall.
Regarded as the bluest of all conifers, Abies concolor 'Candicans' is a magnificent large evergreen conifer. Forming a dense pyramid when young, it matures to a columnar, highly symmetrical shape with handsome layered branches smothered by long, silvery-blue needles.
A deservedly popular White Fir, Abies concolor 'Compacta' is a slow-growing dwarf evergreen conifer of great beauty. It forms a dense, compact mound of irregular, spreading shape, unless it is sheared to a conical form. Its branches are beautifully clothed with long and slender, powder-blue needles
Stately and elegant, Abies nordmaniana 'Golden Spreader' is a slow-growing evergreen conifer of great beauty, particularly in the winter garden. While this dwarf Nordman fir sports a soft green color in summer and fall, its needles turn bright golden-yellow in winter.
Stately, Abies procera 'Glauca' (Blue Noble Fir) is a large sized conical conifer with short, bright blue-gray needles on both the top and underneath. In fall, eye-catching, large blue cones, up to 9 in. long (25 cm), appear upright on the branches before turning reddish brown over time.
Noted for its exfoliating bark and showy fall color, award-winning Acer griseum (Paperbark Maple) is a small spreading deciduous tree that is highly desirable. The chestnut-brown bark of both its trunk and branches constantly peels into thin, tight curls, revealing brighter cinnamon-red wood beneath.
Similar but much smaller than the highly popular 'Sango kaku', Acer palmatum 'Aka Kawa Hime' is also a very desirable Japanese Maple. This deciduous shrub or small tree features a delicate foliage of 5 lobed leaves which emerge fresh yellow-green in spring, mature to mid green in summer and warm up to attractive shades of gold, yellow and red in fall before they shed to the ground.
Similar to the highly popular 'Sango kaku', Acer palmatum 'Beni-Kawa' is noted for its glowing salmon-red bark and vibrant fall color. This deciduous shrub or small tree features a delicate foliage of 5-7 slender tipped lobed leaves which emerge rich green in spring, sometimes lightly edged with red tints.
Noted for its remarkable leaf color, award-winning Acer palmatum 'Beni-Tsukasa' is a small deciduous shrub with a changing foliage, season after season. Emerging bright peachy-yellow in spring, the delicate foliage of palmate, 5-7 slender tipped lobed leaves gradually changes to pink and red with some greenish undertones.
Acer palmatum 'Butterfly' is an upright deciduous shrub or small tree with a pretty variegated foliage of 5-7 lobed green leaves, irregularly margined with silvery-white and light touches of pink on the edges in spring. Some leaves may have no markings while others may be solid cream. Sometimes gracefully twisted, the pale portion of the leaves turns scarlet to magenta in the fall
Award-winning Acer palmatum 'Chitose-Yama' is a medium-sized deciduous shrub with a striking foliage. Emerging rich purple red in spring, the seven pointed, lobed leaves mature to bronze green in summer. In the fall, the leaves turn bright crimson before shedding to the ground.
Noted for its persistent leaf color throughout the entire growing season, award-winning Acer palmatum 'Crimson Queen' is a medium-sized deciduous shrub of outstanding interest.