Prohibited Trees

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Prohibited Trees Table 3.06C Common Name Scientific Name Negative Attributes Almira Norway Maple Acer platanoides Sidewalk damage “Almira” Box Elder Acer negundo Weak wood, sidewalk damage Catalpas Catalpa Species Significant litter (hard fruit 12" or more as elongated pod) Desert, or Velvet, Ash Fraxinus velutina Susceptible to bores, crotch breakage, significant litter Douglas Fir Pseudotsuga menziesii Not as street tree Elms Ulmus Species Susceptible to Dutch Elm disease European Ash Fraxinus excelsior Disease susceptible, significant litter Fruit bearing trees Not appropriate due to fruit Ginkgo, or Maidenhair Ginkgo biloba Disgusting odor from squashed Tree fruit when female near male Green Ash Fraxinus pennsylvanica Susceptible to insects and disease, crotch breakage, significant litter Hackberry or Sugarberry Celtis Species Significant litter (fleshy fruit) Hickory, Pecan Carya Species Significant litter (hard fruit) Holly Ilex Species Sight obstruction (evergreen, low foliage) Horse Chestnut Aesculus hippocastanum Significant litter (inedible nut) Lavalle Hawthorne Crategus lavellei Hazardous (thorns on trunk and branches) Lilac Syringa Species Sight obstruction (low foliage), pollen allergies Oak Quercus Species Significant litter (hard fruit) Pines Pinus Species Sight obstruction (evergreen, low foliage) Poplar, Cottonwood Poplus Species Brittle, significant litter Profusion Crab Apple Malus “Sargent” Significant litter (fleshy fruit) Silver Maple Acer saccaharinum Sidewalk damage, root invasion into pipes Spruces Picea Species Sight obstruction (evergreen, low foliage) Sweetgum Liquidambar styruciflua Significant litter (hard fruit) Thundercloud Plum Prunus “Thundercloud” Significant litter (fleshy fruit) Tree of Heaven Ailanthus altissima Sidewalk damage Walnuts Juglans Species Significant litter (hard fruit) Willow Salix Species Root invasion into pipes Winter Crab Apple Malus “Winter Gold” Significant litter (fleshy fruit) .

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Technical Note 30: Ability of Pacific Northwest Shrubs to Root From
TECHNICAL NOTES _____________________________________________________________________________________________ U.S. DEPT. OF AGRICULTURE NATURAL RESOURCES CONSERVATION SERVICE PORTLAND, OREGON DATE: September 2002 PLANT MATERIALS TECHNICAL NOTE NO. 30 Ability of Pacific Northwest Native Shrubs to Root from Hardwood Cuttings (with Summary of Propagation Methods for 22 Species) Dale C. Darris Conservation Agronomist Corvallis Plant Materials Center SUMMARY There is a need for additional information on how well native shrubs root from hardwood cuttings. First, nurseries are seeking to refine vegetative propagation techniques. Second, practitioners in the fields of riparian/wetland restoration and streambank stabilization are looking for species that are easy to root from unrooted dormant material that will provide cost competitive alternatives to native willows (Salix spp.) and redosier dogwood (Cornus sericea) for direct sticking of cuttings and soil bioengineering practices. The purpose of this work was to screen 15 shrubs indigenous to the Pacific Northwest USA for their ability to root from hardwood cuttings with and without a rooting compound in a greenhouse mist bench, well drained field, nursery bed, and saturated substrate (artificial pond). If a species roots easily, it has greater potential for planting as dormant cuttings, live stakes, or whips directly on a revegetation site, and may warrant further evaluation for fascines, brush mattresses, or other soil bioengineering practices. Based on the rooting ability of hardwood cuttings made from 1 (or 2) year old wood, those species with good potential include black twinberry (Lonicera involucrata), salmonberry (Rubus spectabilis), common snowberry (Symphoricarpos albus), and Pacific ninebark (Physocarpus capitatus). Coyote brush (Baccharis pilularis) and red elderberry (Sambucus racemosa) have fair potential. Indian plum (Oemlaria cerasiformis), mock orange (Philadelphus lewisii), and red flowering currant (Ribes sanguineum) may apply under limited circumstances, select uses, or ideal conditions.
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Salt-Spray Tolerant Groundcovers, Shrubs, and Trees for Eastern Long Island
Salt-spray Tolerant Groundcovers, Shrubs, and Trees for Eastern Long Island Aerial salts carried by on-shore breezes, fog, and wind can injure plants sensitive to salt deposition. The plants listed below have displayed either high or moderate tolerance to salt spray. Most species listed have displayed high tolerance ( little to no damage). Those species noted as having moderate tolerance may show signs of salt injury (tip dieback, foliar damage, reduced growth). Moderately-tolerant species should be planted in areas away from direct salt-spray exposure. Salt-spray tolerance applies to aerial deicing salts as well. The plants listed were chosen because they are relatively disease and pest resistance (unless noted), and well-suited for eastern Long Island. Perennial Groundcovers Foliage Common Name Scientific Name Habit & Comments* Deciduous Beach Pea Lathyrus maritimus native, flowering, silver-green foliage Evergreen Bearberry Arctostaphylos uva-ursi native, low-growing, soft stems Evergreen Shore Juniper Juniperus conferta spreading, dense Semi-evergreen Willowleaf Cotoneaster Cotoneaster salicifolius weeping, cascading Semi-evergreen Lily Turf Liriope muscari grass-like appearance Woody Shrubs (fifteen feet or less in height) Deciduous False Indigo-bush Amorpha fruticosa flowering shrub, prefers wet sites Deciduous Red Chokeberry Aronia arbutifolia moderate salt tolerance, native, early flowering Deciduous Black Chokecherry Aronia melanocarpa moderate salt tolerance, native, early flowering Deciduous Eastern Baccharis Baccharis halimifolia native, tolerates wet sites Deciduous Sweet Pepperbush Clethra alnifolia native, flowers late Deciduous Sweetfern Comptonia peregrina native, prefers dry sites Deciduous Creeping Cotoneaster Cotoneaster adpressus mounded, spreading Deciduous Cotoneaster Cotoneaster divaricatus upright, arching habit Deciduous Forsythia Forsythia x intermedia early spring flowering Deciduous Common Witchhazel Hamamelis virginiana native, very early flowering Deciduous Rose of Sharon Hibuscus syriacus moderately salt tolerant, flowering, mod.
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Psme 46 Douglas-Fir-Incense
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Fraxinus Velutina (Frv) Common Name: Arizona Ash, Velvet Ash, Modesto Ash
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Chestnut Growers' Guide to Site Selection and Environmental Stress
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DOUGLAS's Datasheet
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Arthropod Diversity and Conservation in Old-Growth Northwest Forests'
AMER. ZOOL., 33:578-587 (1993) Arthropod Diversity and Conservation in Old-Growth mon et al., 1990; Hz Northwest Forests complex litter layer 1973; Lattin, 1990; JOHN D. LATTIN and other features Systematic Entomology Laboratory, Department of Entomology, Oregon State University, tural diversity of th Corvallis, Oregon 97331-2907 is reflected by the 14 found there (Lawtt SYNOPSIS. Old-growth forests of the Pacific Northwest extend along the 1990; Parsons et a. e coastal region from southern Alaska to northern California and are com- While these old posed largely of conifer rather than hardwood tree species. Many of these ity over time and trees achieve great age (500-1,000 yr). Natural succession that follows product of sever: forest stand destruction normally takes over 100 years to reach the young through successioi mature forest stage. This succession may continue on into old-growth for (Lattin, 1990). Fire centuries. The changing structural complexity of the forest over time, and diseases, are combined with the many different plant species that characterize succes- bances. The prolot sion, results in an array of arthropod habitats. It is estimated that 6,000 a continually char arthropod species may be found in such forests—over 3,400 different ments and habitat species are known from a single 6,400 ha site in Oregon. Our knowledge (Southwood, 1977 of these species is still rudimentary and much additional work is needed Lawton, 1983). throughout this vast region. Many of these species play critical roles in arthropods have lx the dynamics of forest ecosystems. They are important in nutrient cycling, old-growth site, tt as herbivores, as natural predators and parasites of other arthropod spe- mental Forest (HJ cies.
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Forest An American Wood Service Western United States Department of Agriculture Larch FS-243 The spectacular western larch, which is the largest of the American larches, occurs throughout the forests of west- ern Montana, northern Idaho, and east- ern Washington and Oregon. Western larch wood ranks among the strongest of the softwoods. It is especially suited for construction purposes and is exten- sively used in the manufacture of lumber and plywood. The species has also been used for poles. Water-soluble gums, readily extracted from the wood chips, are used in the printing and pharmaceutical industries. F–522053 An American Wood Western Larch (Lark occidentalis Nutt.) David P. Lowery1 Distribution Western larch grows in the upper Co- lumbia River Basin of southeastern British Columbia, northeastern Wash- ington, northwest Montana, and north- ern and west-central Idaho. It also grows on the east slopes of the Cascade Mountains in Washington and north- central Oregon and in the Blue and Wallowa Mountains of southeast Wash- ington and northeast Oregon (fig. 1). Western larch grows best in the cool climates of mountain slopes and valleys on deep porous soils that may be grav- elly, sandy, or loamy in texture. The largest trees grow in western Montana and northern Idaho. Western larch characteristically occu- pies northerly exposures, valley bot- toms, benches, and rolling topography. It occurs at elevations of from 2,000 to 5,500 feet in the northern part of its range and up to 7,000 feet in the south- ern part of its range. The species some- times grows in nearly pure stands, but is most often found in association with other northern Rocky Mountain con- ifers.
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Conservation Assessment for Butternut Or White Walnut (Juglans Cinerea) L. USDA Forest Service, Eastern Region
Conservation Assessment for Butternut or White walnut (Juglans cinerea) L. USDA Forest Service, Eastern Region 2003 Jan Schultz Hiawatha National Forest Forest Plant Ecologist (906) 228-8491 This Conservation Assessment was prepared to compile the published and unpublished information on Juglans cinerea L. (butternut). This is an administrative review of existing information only and does not represent a management decision or direction by the U. S. Forest Service. Though the best scientific information available was gathered and reported in preparation of this document, then subsequently reviewed by subject experts, it is expected that new information will arise. In the spirit of continuous learning and adaptive management, if the reader has information that will assist in conserving the subject taxon, please contact the Eastern Region of the Forest Service Threatened and Endangered Species Program at 310 Wisconsin Avenue, Milwaukee, Wisconsin 53203. Conservation Assessment for Butternut or White walnut (Juglans cinerea) L. 2 Table Of Contents EXECUTIVE SUMMARY .....................................................................................5 INTRODUCTION / OBJECTIVES.......................................................................7 BIOLOGICAL AND GEOGRAPHICAL INFORMATION..............................8 Species Description and Life History..........................................................................................8 SPECIES CHARACTERISTICS...........................................................................9
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