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Pragati Shrestha and Jessica D. Lubell

landscaping have been found to be invasive, and sales of these plants have declined dramatically in recent years ( McCoy 2011 ). Two such invasive shrubs are japanese barberry and winged euonymus. Ironically, some of the same traits that brought japanese

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Neil C. Bell

The genus Ceanothus , also known as wild lilac or simply ceanothus, comprises ≈55 species of woody shrubs native to North America ( Hardig et al., 2000 ). The distribution of species is concentrated in western North America, particularly in

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Sandra M. Reed and Margaret R. Pooler

Clethra alnifolia L. (family Clethraceae Klotzsch.) is an ornamental shrub that is native to the eastern United States ( Wilbur and Hespenheide, 1967 ). While sometimes called summersweet or sweet pepperbush, it is more commonly known as clethra

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Neil C. Bell and James Altland

). Somewhat shorter than this, but forming a much denser shrub, was C . × aguilarii (often erroneously sold in North America as Cistus ‘Blanche’), which has thick, wavy-edged leaves and from an ornamental standpoint is far superior to C . × verguinii

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Kathy Zuzek, David Zlesak, Vance Whitaker, Steve McNamara, and Stan C. Hokanson

.] is also a limiting factor. Foliar diseases defoliate plants and reduce the ornamental value, vigor, and winter survival of susceptible cultivars. A breeding program was initiated at the University of Minnesota in 1990 to develop cold-hardy, repeat

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Neil Bell, Heather Stoven, James S. Owen Jr., and James E. Altland

HortTechnology 15 132 135 Stanley, C.J. Warrington, I. 1988 Seasonal frost tolerance of some ornamental evergreen broad-leaved and coniferous tree and shrub species N. Z. J. Expt. Agr. 16 239 248 Tully, P. 1977 The Poorinda grevilleas. Austral. Plants 9:213–215 U

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Margaret R. Pooler

), ARS, National Genetic Resources Program, 2010 ; Winkworth and Donoghue, 2005 ]. They are versatile shrubs that have become a mainstay of American landscapes for their showy and often fragrant spring blooms, richly colored sometimes evergreen foliage

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Dewayne L. Ingram, Charles R. Hall, and Joshua Knight

spruce), and Cercis canadensis L. (redbud) and 0.9-m Judd viburnum ( Viburnum × juddi Rehder) and a 0.6-m ‘Densiformis’ yew ( Taxus × media Rehder) shrubs were reported as 20.9 (adjusted for more inclusive fuel and weighted sequestration during

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Paul D. Curtis and Jason R. Boulanger

White-tailed deer populations and their impacts have continued to escalate in recent decades in suburban and natural areas ( DeNicola et al., 2008 ). Deer damage to ornamental flowers and shrubs, crops, nurseries, and orchards is substantial

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Margaret R. Pooler

trip were grown in the shrub breeding research nursery at the National Arboretum in Washington, DC, and in 2006, ‘Snow Panda’ was selected in cooperation with Monrovia Growers (Visalia, CA) and propagated for further evaluation. ‘Snow Panda’ has been