Shrubs
Fragrant Sumac 'Konza'
USDA hardiness zones: 5 to 9
Fragrant Sumac Rhus aromatica is native to much of the eastern United States and southeastern Canada. 'Konza' is a deciduous variety of fragrant sumac that grows to about 9 feet tall, fruits heavily and has dark red foliage in fall. Use 'Konza' in borders or hedges, or as foundation plants. In the trials, 'Konza' has adapted well to a wide variety of climates and soil types, and has been particularly drought tolerant. Fully hardy in USDA zones 5 to 9, 'Konza suffered winter twig injury in the trials in USDA zones 3 and 4.

Silver Buffaloberry 'Sakakawea'
Hardiness zones: 2 to 6
Silver Buffaloberry (Shepherdia argentea) is native to the North American plains from Manitoba to Kansas and Nevada. It's a large shrub (up to 20 feet tall) with silvery leaves, similar in appearance to Russian olive. Its fruits are red to orange-red. Use it for windbreaks, hedges and specimens. It grows well in poor, alkaline soils and dry conditions, as well as in fertile soils and those with lower (more acidic) pH. Developed at the USDA's Bismarck, ND Plant Materials Center, 'Sakakawea' should perform well in the central regions of the United States and, if planted in well-drained soil, in other areas of the United States and southern Canada from USDA zones 2b to 6b.

Red Osier Dogwood 'Cardinal'
Hardiness zones: 3 to 5
Red Osier Dogwood (Comus sericea), which grows up to 10 feet tall and to 12 feet wide, is found from Newfoundland to Manitoba and on to the Pacific Northwest, and south to Virginia and New Mexico. Researchers at the University of Minnesota shrub-breeding program selected 'Cardinal' for its bright, cherry red twig color, which is a stand-out in the winter landscape. Its leaves also turn bright red in fall. 'Cardinal' has the most dramatic visual impact when planted as massings and screens, but the plants can also be used individually. As you might expect from a plant bred in Minnesota, 'Cardinal' is very winter hardy and performs well throughout the eastern U.S. and southeastern Canada. It also fares well in western North America where moisture is adequate.

Silky Dogwood 'Indigo'
Hardiness zones: 4 to 9
Silky Dogwood (Comus amomum) is a native shrub of eastern and north-central United States and southeastern and south-central Canada. 'Indigo', selected at the NRCS Rose Lake Plant Materials Center, East Lansing, Michigan, is a dense, multistemmed shrub that can grow to 10 feet tall. The stems are red when young but turn brown and gray as they mature. Yellowish-white flowers bloom in mid-June. Abundant fruit is often produced, and the fruit ripens in September. The fruit is pale to dark blue and about a quarter-inch in diameter. 'Indigo' is adapted to a wide range of soils and grows from somewhat poorly drained to well drained sites. It has shown slight leaf chlorosis in alkaline soil. It is moderately shade tolerant, but not drought tolerant.

Ninebark 'Nugget'
Hardiness zones: 3 to 6
Ninebark (Physocarpus opulifolius) is a popular shrub native to northeastern and north-central United States and southeastern and south-central Canada. 'Nugget' is a fine textured, compact (5 feet by 3 feet) plant with lime-green colored leaves. Its clusters of small whitish flowers open in early summer. 'Nugget' is best used in borders, massings and hedges.

Viburnum 'Emerald Triumph'
Hardiness zones: 3 to 7
Viburnum 'Emerald Triumph' is a cross of Viburnum burejaeticum and Viburnum 'Allegheny'. It has a compact habit—10 feet high and wide—glossy, dark green foliage and white, nearly flat clusters of flowers in late spring. Its fruit begin to turn bright red in early August and gradually turning black by mid-autumn. South of USDA zone 4, the fall color is bronze to dark red. Above zone 5, the fall color may not have time to develop prior to the first hard freeze of autumn. 'Emerald Triumph' should perform well throughout the eastern half of the United States, the west coast and in the Great Plains and Basin areas with adequate moisture and protection.

Barberry 'Emerald Carousel'
Hardiness zones: 3 to 8
'Emerald Carousel' barberry (Berberis koreana x thunbergii) is an attractive hybrid between two widely grown barberries. In spring, its foliage is yellow edged in red, then it darkens to bright green as the season progresses. Small golden-yellow flowers hang in clusters from the arching branches in midspring. 'Emerald Carousel' bears clusters of eye-catching red fruits. It grows to about 3 feet tall. 'Emerald Carousel' should be adapted to most of the eastern half of the United States and throughout much of the West with adequate moisture.

Weigela 'White Knight'
Hardiness zones: 3 to 8
'White Knight' Weigela (Weigela florida) is the product of crossing two unpatented weigela varieties. Its winter hardiness and mild fragrance distinguish it from all other common, white flowered Weigela. Its flowers are funnel- shaped, borne the length of upright stems, and begin as pinkish-white buds opening, in USDA zone 5, to pure white flowers in late May or early June. Its foliage is a medium green and virtually free of insects and diseases. 'White Knight' can withstand judicious pruning to alleviate any unsightly appearance after a rigorous winter. Use 'White Knight' for hedging, massing, or as an accent around building foundations. It typically reaches about 5 feet tall and 6 feet wide.

Trees
Western Larch
Hardiness zones: 4 to 7
Western larch (Larix occidentalis) is native to the higher elevations of western Montana, northern Idaho, eastern portions of Washington and Oregon, and southeastern British Columbia. One of the tallest species of larch, it reaches up to 150 feet tall. Typical of larch species, this deciduous conifer drops its leaves in the fall. The needles turn a bright yellow before they drop. The spring growth of new needles is also very attractive. The tree has a nice pyramidal form, but should only be used in areas that can accommodate its wide branching habit. Western larch is adapted to wet or well-drained sites and can tolerate a wide range of soil pH. It should perform well in much of the United States and southern Canada.

River Birch 'Little King'
Hardiness zones: 4 to 7
'Little King' River Birch (Betula nigra) is an unusual cultivar of the commonly used River Birch tree. The unusual species is native to the eastern United States west to Minnesota and Kansas and can be found as far south as Florida. 'Little King' is a low-branched, small tree that grows only 7 to 8 feet in a 10-year period. The tree has a pronounced, rounded-pyramidal habit. Early spring foliage is bright green, the slightly darker summer foliage is glossy. The exfoliating (peeling) bark is broken into patterns of pale salmon and shades of cinnamon-red. 'Little King' has excellent resistance to borers, chlorosis and heat stress. The neat, compact habit of this cultivar should make it ideal for use as specimen plants, borders, low maintenance landscapes and hedges. 'Little King' will perform well throughout the eastern United States and adjoining southern Canada, the Midwest, protected areas in the Great Plains and throughout much of the West with adequate moisture.

Sources
ArborVillage
Holt, MO
(816) 264-3911

Bergeson Nursery
Fertile, MN
(218) 945-6988

Fairweather Gardens
Greenwich, NJ
(856) 451-6261

Fedco
Waterville, ME
Fax: 207-872-8317

Forestfarm
Williams, OR
(541) 846-7269

Gardens North
Grower, Ontario
(613) 489-0065

Greer Gardens
Eugene, OR
(541) 686-8266

Heronswood Nursery Ltd.
Kingston, WA
(360) 297-4172

Joy Creek Nursery
Scappoose, OR
(503) 543-7474

McKay Nursery Co.
Waterloo, WI
(920) 478-2121

Northplan/Mountain Seed
Moscow, ID
(208) 882-8040

Oikos Tree Crops
Kalamazoo, MI
(616) 624-6233

Rich's Foxwillow Pines Nursery
Woodstock, IL
(815) 338-7442

Roslyn Nursery
Dix Hills, NY
(631) 643-9347

Sheffield's Seed Co.
Locke, NY
(315) 497-1058

Wayside Gardens
Hodges, SC
(800) 845-1124

We-Du Nurseries
Marion, NC
(828) 738-8300

Windrose
Pen Argyl, PA
(610) 588-1037