10 ROADSIDE PLANTING VIII. Plant Materials In selecting trees and shrubs for a given location, a survey of the existing native growth will indicate the species to plant, and the other kinds that can be used. Soil conditions are important and should be carefully studied. A list of suggested material for roadside planting is to be found in this booklet beginning on this page. In this list the scientific names are given as well as the common names, and key letters are included which refer to the regions, outlined on the accompanying United States map, in which the species will grow. Boundaries of these regions or zones are approximate only and must not be considered as sharp limits of territory in which a given species may thrive. Such divisions can be made only in a general way. Not all available trees are listed, by any means; many of the soft-wooded species, quick-growing and liable to produce dead wood rapidly are omitted in the interest of more lasting and satisfactory planting. ROADSIDE PLANTING CODE REGION \r N North Eastern C Central Eastern M Mountain P Northern Pacific Coast S Southern and South Pacific Coast LIST OF TREES AND SHRUBS FOR HIGHWAY PLANTING Shade Trees Small Trees— -Continued Region Common Name Scientific Name Region Common Name : Scientific Name NMP Alder Alnus glutinosa CS Red Bud Ccrcis canadensis NMCPS White Ash Fraxinus americana NCP Thorn Apple Crataegus crus galli C Ohio Buckeye Aesculus glabra NC Scarlet Thorn Crataegus coccinea NCI’S Horse Chestnut Aesculus hippocastanum M Colorado Hawthorn Crataegus coloradensis S NCS Camphor Tree Catalpa Cinnamomunt camphora Catalpa spcciosa s s China Tree Southern Cypress Mclia azcdarach Cupressus macrocarpa Trees At Streams NMCS American Elm Ulmus americana NMCP PaperorCanoe Birch Bctula nanvrifera NCS Ginkgo Ginkgo biloba CS River Birch Bctula nigra NMCPS Sweet Gum Hackbcrry Liquidambar styracitlua Celtis occidentalis NMCPS NCS White Birch Golden Willow Bctula alba Salix vitellina aurc-a NCPS Linden or Basswood 1 Tilia americana NC Pussy Willow Salix caprca P Madrona Arbutus procera NCS Weeping Willow Salix babylonica S Magnolia Magnolja grandiflora NMCPS White Willow Salix alba cs Magnolia Magnolia accuminaia NMCP Norway Maple Acer platanoides NC NMC Red Maple Sugar Maple Acer rubrum Acer saccharum Nut Trees NC Bur Oak Qucrcus macrocarpa CS Beech Fagus americana CS Laurel Oak Qucrcus laurifoha NMC Black Walnut Juglans nigra Juglans cincrca S Live Oak NC Butternut NMCP Pin Oak- Qucrcus palustris CPS English Walnut Juglans regia NMCP NC Red Oak Scarlet Oak Qucrcus rubra Qucrcus coccinea NC Hickory Hicoria ovata NCS Swamp White Oak (Quercus platanoidcs CS NCS Water Oak White Oak (Qucrcus nigra Qucrcus alba NMC bvergreens S Desert Palin Washingtonia filaineuto-a Arbor \ itac Thuya occidentalis S s Royal Palm Palmetto Rovstonca regia Sabal palmetto NMCP NMCP rir or White Spruce Abies concolor Balsam Fir Abies balsamca cs Pecan Hicoria pecan MP Douglas Fir Tsuga douglassi cs Pepi>cridgc Nyssa sylvatica M Colorado Silver Junipcrus scopuloruin s Pomciana NCP Cedar cs Oriental Plane Platanus orientalii Hemlock Tsuga canadensis NCS Sycamore I’latanus occidentalis S NC Australian Pine Pinus australis CS Sassafras Sassafras Officinalis Austrian Pine Pinus austraiaca s cs Tulip Tree Sapindus drummondi Liriodendron tulipifera CS % Eucalyptus ficifolia Pinus palustris NMC Rocky Mt. Pine Scotch Pine White Pine Pinus ponderosa NC Small Trees NC NMC Pinus sylvestris Pinus strobus Crabapplc Malus coronarius NMC Colorado Blue Spruce Picca nungcus CSP Flowering Dogwood Cornus florida NCP White Spruce Picca canadensis NCP Mountain Ash Sorbus americana NMCP Larix americana NMCPS Wild Plum Prunus americana NMP Yew Taxus canadensis Shrubs Region Common Name Scientific Name CS Flowering Almond Prunus japonica NMCP Aralia Aralia pentaphylla NMCS Arrowwood Viburnum dentatum CS Azalea Azalea amoena NMCPS Japanese Barberry Berberis ihunbergi Ccphalanthus occidcntalis Aphyllon ludovicianum MPS Broom CS Cinquefoil Potentilla fruticosa NC Alpine Currant Ribcs alpinum NCS Dewberry Lucretia NMCP Grey-branched Dog- wood Cornus paniculata NMCP Rcd-branched Dog- wood Cornus stolonifera NMCPS Elder NMC Hazelnut Corylus amcricana Hibiscus grandiflorus S Hibiscus NMCPS Bush Honeysuckle Lonicera tartarica NMCPS CS Indian Currant Kerria NP NMCPS S Kinnikinnick Lilac Oleander Arctostaphylos uva-ursi &vulearis NMCPS Ibola Privet Ligustrum ibota CMS NCS Flowering Quince Sweet Briar NMCPS Meadow Rose Rosa blanda . NMCPS Memorial Rose Rosa wichuraiana NCS Rosa Carolina NCS Wild Rose Rosa setigera P Salal Gaulthcria shallon NMCS Viburnum lentago NMCPS NMCPS Spiral Symphoricarpus raccmosus Spiraea van houttei NMCPS Sumac Rhus typhina Sh ru bs—Con tin u ed Region Common Name • Scientific Name NCS Fragrant Sumac Rhus aromatica NMCPS Syringa Philadclphus coronarius Evergreen Shrubs CSP Holly Ilex opaen CS Mountain Laurel Kalmia latifolia CSP Mahonia Mahonia aquifolia CSP Rhododendron Rhododendron maximum Vines CMS Bittersweet Celastrus scandens NMCPS Clematis Clematis virginiana CMS Euonymus Euonymus radicans NMCS Wild Grape Honeysuckle Vitis aestivalis NMCS Lonicera halleana CS CMS Boston Ivy English Ivy Ampclopsis vcitchi Hedera helix NCS Matrimony Vine Lyciura barbarum Mcnispermum canadcnse NMCS Moonsced NCS Myrtle Vinca minor NMCS Trailing Rose Rosa wichuraiana Dorothy Rosa wichuraiana Evergreen Gera Rosa wichuraiana Far- Rosa wichuraiana Gardenia Rosa wichuraiana Hiawatha Rosa wichuraiana South Orange Perfection Rosa wichuraiana Excclsa