| Adams Crabapple - Malus 'Adams' | 02/02/2013 |
| Adirondack Crabapple - Malus 'Adirondack' | 03/02/2013 |
| Alaska-Cedar - Chamaecyparis Nootkatensis | 01/31/2013 |
| American Basswood or Linden - Tilia americana L. | 12/31/2012 |
| American Beech Tree - Fagus grandifolia | 01/16/2013 |
| American Elm - Ulmus americanus | 01/31/2013 |
| American Holly - Ilex opaca 'Canary' | 03/11/2013 |
| American Holly - Ilex opaca 'Carnival' | 03/02/2013 |
| American Holly - Ilex opaca 'Miss Courtney' | 03/11/2013 |
| American Holly - Ilex opaca 'Miss Helen' | 03/02/2013 |
| American Holly - Ilex opaca 'Satyr Hill' | 03/02/2013 |
| American Holly - Ilex opaca 'Shannon Chiles' | 02/01/2013 |
| American Hornbeam - Carpinus caroliniana | 03/02/2013 |
| American Masterpiece Crabapple - Malus Amaszam' | 02/10/2013 |
| American Mountain-Ash - Sorbus americana | 02/08/2013 |
| American Plum - Prunus americana var. lantana | 02/10/2013 |
| American Smoke Tree - Cotinus obovatus | 02/28/2013 |
| American Sycamore Tree - Platanus occidentalis | 01/24/2013 |
| Ames Juniper - Juniperus chinensis 'Ames' | 03/03/2013 |
| Amur Cherry - Prunus maackii | 02/10/2013 |
| Amur Cork Tree - Phellodendron amurense | 02/23/2013 |
| Amur Honeysuckle - Lonicera maackii | 03/20/2013 |
| Amur Maackia - Maackia amurensis | 01/05/2013 |
| Amur Maple - Acer ginnala | 02/28/2013 |
| Amur Mountain-Ash - Sorbus amurensis | 02/10/2013 |
| Anise Magnolia - Magnolia salicifolia | 01/11/2013 |
| Arborvitae: Genus Thuja | 03/03/2013 |
| Arctic Moor Birch - Betula pubescens subspecies tortuosa | 02/16/2013 |
| Aristocrat Callery Pear - Pyrus calleryana 'Aristocrat' | 02/09/2013 |
| Arizona Walnut - Juglans major | 02/23/2013 |
| Armstrong Freeman's Maple - Acer x freemanii 'Armstrong' | 02/28/2013 |
| Asian White Birch - Betula platyphylla | 02/17/2013 |
| Atlantic White-Cedar - Chamaecyparis thyoides | 03/03/2013 |
| Autumn Blaze Maple - Acer x freemanii 'Autumn Blaze' | 02/28/2013 |
| Autumn Flame Red Maple - Acer rubrum 'Autumn Flame' | 02/28/2013 |
| Baldcypress - Taxodium distichum | 02/19/2013 |
| Balkan Pine - Pinus peuce | 01/31/2013 |
| Balsam Fir - Abies balsamea | 01/31/2013 |
| Balsam Poplar - Populus balsamifera | 03/10/2013 |
| Bearded Maple - Acer barbinerve | 02/28/2013 |
| Bergmann's Elm - Ulmus bergmanniana | 01/31/2013 |
| Big-Leaf Linden - Tilia platyphyllos | 12/28/2012 |
| Birch-Leaved Pear Tree - Pyrus betulaefolia | 02/08/2013 |
| Bitternut Hickory - Carya cordiformis | 03/02/2013 |
| Black Cherry - Prunus serotina | 02/09/2013 |
| Black Walnut Tree - Juglans nigra | 02/23/2013 |
| Black Willow - Salix nigra | 03/10/2013 |
| Blackthorn or Sloe - Prunus spinosa | 02/10/2013 |
| Blue Globe Spruce - Picea pungens 'Globosa' | 05/16/2013 |
| Blue Rug Juniper - Juniperus horizontalis | 01/31/2013 |
| Bob White Crabapple - Malus 'Bob White' | 02/09/2013 |
| Bowhall Red Maple - Acer rubrum 'Bowhall' | 02/28/2013 |
| Bunge Catalpa - Catalpa bungei | 03/01/2013 |
| Bur Oak - Quercus macrocarpa | 02/28/2013 |
| Burgundy Crabapple - Malus 'Burgundy' | 02/09/2013 |
| Butterfly Gardens | 03/12/2013 |
| Butternut Tree - Juglans cinerea | 03/02/2013 |
| Callery Pear - Pyrus calleryana var. dimorphophylla | 02/09/2013 |
| Caspian Locust Tree - Gleditsia caspica | 03/02/2013 |
| Castor-Aralia - Kalopanax pictus | 03/02/2013 |
| Cedar Elm - Ulmus crassifolia | 01/31/2013 |
| Checker (chequer) Tree Mountain-Ash - Sorbus torminalis | 01/25/2013 |
| Chenmou Elm - Ulmus chenmoui | 01/31/2013 |
| Cherry Trees | 02/08/2013 |
| Chestnut Oak - Quercus prinus | 02/20/2013 |
| Chestnut Tree - Castanea sp. | 02/28/2013 |
| Chinese Catalpa - Catalpa ovata | 03/03/2013 |
| Chinese Cork Tree - Phellodendron chinense | 03/03/2013 |
| Chinese Elm - Ulmus parvifolia | 01/23/2013 |
| Chinese Fringe Tree - Chionanthus retusus | 03/01/2013 |
| Chinese Hard Pine - Pinus tabulaeformis | 01/31/2013 |
| Chinese Linden - Tilia chinensis | 01/30/2013 |
| Chinese Mountain-Ash - Sorbus pohaushanensis | 02/08/2013 |
| Chinese Obelisk Juniper - Juniperus chinensis 'Obelisk' | 02/19/2013 |
| Chinese Wingnut Tree - Pterocarya stenoptera | 02/20/2013 |
| Chinese Yew - Taxus chinensis | 03/01/2013 |
| Chinquapin Oak / Chinkapin Oak - Quercus muhlenbergii | 02/28/2013 |
| Christmas Holly Crabapple - Malus 'Chrishozam' | 02/08/2013 |
| Cloud 9 Flowering Dogwood - Cornus florida 'Cloud 9' | 01/25/2013 |
| Cockspur Hawthorn - Crataegus crus-galli | 02/07/2013 |
| Coleman Sugar Maple - Acer saccharum 'Coleman' | 03/21/2013 |
| Commendation Elm - Ulmus 'Morton Stalwart' | 01/31/2013 |
| Common Apple - Malus pumila | 01/25/2013 |
| Common Pear - Pyrus communis | 02/08/2013 |
| Copper Beech - Fagus sylvatica 'Atropunicea' | 12/31/2012 |
| Cork Bark Elm - Ulmus propinqua var. suberosa | 01/31/2013 |
| Corkscrew Black Locust - Robinia pseudoacacia 'Tortuosa' | 01/05/2013 |
| Cornelian Cherry - Cornus mas | 01/25/2013 |
| Crabapple - Malus flexilus | 02/08/2013 |
| Crabapples for Home Landscape | 02/12/2013 |
| Crack Willow - Salix fragilis | 01/13/2013 |
| Crimean Linden - Tilia x euchlora | 12/31/2012 |
| Cucumbertree - Magnolia acuminata | 01/11/2013 |
| Cut-leaved European Beech - Fagus sylvatica var. 'Laciniata' | 12/31/2012 |
| Cutleaf Black Walnut - Juglans nigra "laciniata" | 03/02/2013 |
| Dahurian Birch - Betula davurica | 03/02/2013 |
| Damask Red Horse Chestnut - Aesculus x carnea 'Plantierensis' | 01/21/2013 |
| David Crabapple - Malus 'David' | 02/09/2013 |
| David Elm - Ulmus davidiana v. mandshurica | 01/31/2013 |
| Dawn-Redwood - Metasequoia glyptostroboides | 02/12/2013 |
| Deep-Veined Maple - Acer argutum | 05/17/2013 |
| Deerproof Giant Arborvitae - Thuja plicata 'Klmfiv' | 03/03/2013 |
| Deptford Pink - Dianthus armeria | 05/16/2013 |
| Dogwood Twig Borer Beetle - Oberea tripunctata | 04/16/2013 |
| Dolgo Crabapple - Malus 'Dolgo' | 02/08/2013 |
| Donald Wyman Crabapple - Malus 'Donald Wyman' | 02/08/2013 |
| Doublefile Viburnum - Viburnum plicatum | 12/30/2012 |
| Doubleflower Chinese Crabapple - Malus spectabilis 'Plena' | 02/07/2013 |
| Douglas Fir - Pseudotsuga menziesii | 01/31/2013 |
| Downy Birch - Betula pubescens | 03/02/2013 |
| Downy Hawthorn - Crataegus mollis | 02/07/2013 |
| Dragon Spruce - Picea asperata | 01/31/2013 |
| Dropmore Siberian Elm - Ulmus pumila 'Dropmore' | 01/31/2013 |
| Durand Dwarf Amur Maple - Acer ginnala | 02/28/2013 |
| Durmast Oak - Quercus petraea | 02/28/2013 |
| Dusky Pear - Pyrus phaeocarpa | 02/07/2013 |
| Dwarf Dogwood - Cornus pumila | 12/20/2012 |
| Dwarf Japanese Garden Juniper - Juniperus procumbens 'Nana' | 02/19/2013 |
| Eastern Cottonwood - Populus deltoides | 01/07/2013 |
| Eastern Hemlock - Tsuga canadensis | 01/31/2013 |
| Eastern Redbud - Cercis canadensis | 01/14/2013 |
| Eastern Redbud - Cercis canadensis 'Pinkbud' | 01/07/2013 |
| Eastern White Pine Tree- Pinus strobus | 01/31/2013 |
| Elegant Giant Arborvitae - Thuja plicata 'Elegantissima' | 03/03/2013 |
| Elizabeth Magnolia - Magnolia 'Elizabeth' | 01/11/2013 |
| English Elm - Ulmus procera | 01/31/2013 |
| English Holly - Ilex aquifolium | 03/02/2013 |
| English Oak - Quercus robur | 02/28/2013 |
| Eucalyptus Tree - Eucalyptus globulus | 01/24/2013 |
| European Beech - Fagus sylvatica | 02/20/2013 |
| European Beech - Fagus sylvatica var. 'Zlatia' | 02/20/2013 |
| European Black Alder - Alnus glutinosa | 03/02/2013 |
| European Hornbeam - Carpinus betulus | 02/18/2013 |
| European Larch - Larix decidua | 01/30/2013 |
| European Mountain-Ash - Sorbus latifolia | 02/07/2013 |
| European Silver Fir - Abies alba | 01/31/2013 |
| European White Alder - Alnus incana | 02/18/2013 |
| European White Birch - Betula pendula - syn. Betula verrucosa | 03/01/2013 |
| Families Rutaceae and Cercidiphyllum | 02/23/2013 |
| Family Aceraceae - Maples | 05/17/2013 |
| Family Adoxaceae - Viburnums and Allies | 05/16/2013 |
| Family Anacardiaceae - Cashew or Sumac Family | 02/28/2013 |
| Family Aquifoliaceae – Holly & Winterberry | 05/16/2013 |
| Family Araliaceae - Ivy and Ginseng Family | 01/31/2013 |
| Family Betulaceae - Alder, Birch & Hornbeam | 05/16/2013 |
| Family Celastraceae - Bittersweets, Spindle Trees | 02/22/2013 |
| Family Cornaceae - Dogwoods | 05/16/2013 |
| Family Cupressaceae - Redwood, Cypress, Arborvitae, Juniper | 02/19/2013 |
| Family Fabaceae - Legumes | 01/07/2013 |
| Family Fabaceae Index | 05/16/2013 |
| Family Fagaceae - Beech, Chinkapin and Oak | 01/22/2013 |
| Family Fagaceae Index - Beech, Chinkapin and Oak | 02/28/2013 |
| Family Hamamelidaceae: Witch Hazel, Gum Trees | 01/31/2013 |
| Family Hippocastanaceae - Horse-Chestnuts & Buckeyes | 05/16/2013 |
| Family Juglandaceae - Nut Trees; Walnut, Hickory, Butternut, Pecan | 02/28/2013 |
| Family Magnoliaceae - Magnolias | 01/18/2013 |
| Family Magnoliaceae Index | 05/16/2013 |
| Family Moraceae - Mulberries and Figs | 02/28/2013 |
| Family Oleaceae - Olive Family | 05/16/2013 |
| Family Pinaceae Index | 05/18/2013 |
| Family Pinaceae: The Pines, Cedars, Spruce, and Firs | 01/06/2013 |
| Family Rosaceae - Fruit Trees | 02/12/2013 |
| Family Rosaceae Index | 05/18/2013 |
| Family Salicaceae - Willow, Poplar and Aspen | 05/16/2013 |
| Family Taxaceae - Yews | 02/28/2013 |
| Family Tiliaceae - Basswood, Linden, Lime | 01/15/2013 |
| Family Ulmaceae - Zelkovas, Hackberries and Elms | 01/31/2013 |
| Family Ulmaceae Index | 02/05/2013 |
| Flowering Dogwood - Cornus florida | 02/22/2013 |
| Flowering Plants | 05/16/2013 |
| Flowering Plants Index | 05/16/2013 |
| Forsythia suspensa | 02/21/2013 |
| Fragrant Sumac - Rhus aromatica | 01/17/2013 |
| Fremd Eastern Hemlock - Tsuga canadensis 'Fremdii' | 01/30/2013 |
| Fringe Tree - Chionanthus virginicus | 03/02/2013 |
| Fuerst Buelow Common Lilac - Syringa vulgaris 'Fuerst Beulow' | 02/21/2013 |
| Fuji Cherry - Prunus incisa | 02/07/2013 |
| Funeral Cypress - Cupressus funebris | 02/19/2013 |
| Fungi, Mushrooms, Puffballs, Truffles, Morels and More | 03/21/2013 |
| General Sheridan Common Lilac - Syringa vulgaris 'General Sheridan' | 02/21/2013 |
| Giant Arborvitae - Thuja plicata 'Stoneham Gold' | 03/03/2013 |
| Giant Puffball Fungi - Calvatia gigantea | 03/21/2013 |
| Ginkgo in different languages | 05/16/2013 |
| Ginkgo Tree - Ginkgo biloba | 01/17/2013 |
| Globe Norway Maple - Acer platanoides 'Globosum' | 05/18/2013 |
| Golden Larch - Pseudolarix amabilis | 01/31/2013 |
| Golden Pfitzer Juniper - Juniperus chinensis 'Pfitzeriana aurea' | 01/21/2013 |
| Golden Shadows Pagoda Dogwood - Cornus alternifolia | 01/01/2013 |
| Golden Weeping Willow - Salix alba 'Tristis' | 01/13/2013 |
| Green Giant Arborvitae - Thuja 'Green Giant' | 03/03/2013 |
| Green Hawthorn - Crataegus viridis 'Winter King' | 02/01/2013 |
| Green Mountain Sugar Maple - Acer saccharum | 02/28/2013 |
| Green Star Magnolia - Magnolia stellata 'Green Star' | 03/02/2013 |
| Green Vase Zelkova - Zelkova serrata var. "Green Vase" | 02/05/2013 |
| Greuneveld Holland Elm - Ulmus x hollandica 'Greuneveld' | 01/31/2013 |
| Hackberry - Celtis occidentalis | 01/31/2013 |
| Hall Crabapple - Malus halliana var. Spontanea | 02/07/2013 |
| Hartwig Locust Tree - Robinia hartwigii | 01/07/2013 |
| Hedge Maple - Acer campestre | 02/28/2013 |
| Henning Crabapple - Malus 'Henningi' | 02/07/2013 |
| Hickory - Carya sp. | 01/22/2013 |
| Hillspire Juniper - Juniperus virginiana 'Cupressifolia' | 02/19/2013 |
| Himalayan Pear - Pyrus pashia | 02/08/2013 |
| Himalayan Spindle Tree - Euonymus hamiltonianus | 02/22/2013 |
| Himalayan White Pine Tree- Pinus wallichiana | 01/31/2013 |
| Hobei Elm - Ulmus lamellosa | 01/31/2013 |
| Holiday Gold Crabapple - Malus 'Hozam' | 02/06/2013 |
| Hooks Hawthorn - Crataegus 'Hooks' | 02/07/2013 |
| Hornbeam Maple - Acer carpinifolium | 02/28/2013 |
| Hornibrook Dwarf Austrian Pine - Pinus nigra 'hornibrookiana' | 01/30/2013 |
| Horse Chestnut - Aesculus hippocastanum | 02/23/2013 |
| Houpu Magnolia - Magnolia officinalis | 01/18/2013 |
| Hupeh Mountain-Ash - Sorbus hupehensis | 02/10/2013 |
| Hybrid Elm - Ulmus (carpinifolia x pumila) | 02/12/2013 |
| India Quassia - Picrasma quassioides | 02/28/2013 |
| Indian Magic Crabapple - Malus 'Indian Magic' | 02/06/2013 |
| Invasive Species of North America | 04/19/2013 |
| Ivory Chalice Magnolia - Magnolia 'Ivory Chalice' | 03/02/2013 |
| Ivy-leaved Maple - Acer cissifolium | 02/28/2013 |
| Jack Pine - Pinus banksiana | 01/31/2013 |
| Jack Viburnum - Viburnum X jackii | 12/30/2012 |
| Japanese Aralia - Fatsia japonica | 03/02/2013 |
| Japanese Azalea - Rhododendron japonicum | 05/16/2013 |
| Japanese Bird Cherry & Gray's Bird Cherry | 02/08/2013 |
| Japanese Cedar - Cryptomeria japonica | 03/01/2013 |
| Japanese Elm - Ulmus japonica | 01/31/2013 |
| Japanese Flowering Crabapple - Malus floribunda | 02/06/2013 |
| Japanese Hill Cherry - Prunus serrulata | 01/31/2013 |
| Japanese Hornbeam - Carpinus japonica | 02/18/2013 |
| Japanese Horse Chestnut - Aesculus turbinata | 02/22/2013 |
| Japanese Locust - Gleditsia japonica | 01/07/2013 |
| Japanese Maple - Acer palmatum | 02/28/2013 |
| Japanese Mountain-Ash - Sorbus commixta | 01/26/2013 |
| Japanese Mulberry - Morus australis | 01/07/2013 |
| Japanese Orixa - Orixa japonica | 02/22/2013 |
| Japanese Red Pine (Tanyosho Pine) - Pinus densiflora | 01/31/2013 |
| Japanese Red Pine (Tanyosho Pine) - Pinus densiflora 'Umbraculifera' | 01/31/2013 |
| Japanese Tree Lilac - Syringa reticulata | 03/01/2013 |
| Japanese Walnut - Juglans ailantifolia | 02/23/2013 |
| Japanese White Birch - Betula platyphylla var. japonica | 01/16/2013 |
| Japanese White Pine - Pinus parviflora | 01/31/2013 |
| Japanese Yew - Taxus cuspidata var. Pendula | 01/30/2013 |
| Japanese Zelkova - Zelkova serrata | 02/05/2013 |
| Jersey Elm - Ulmus carpinifolia 'Sarniensis' | 02/12/2013 |
| Jewelberry Crabapple - Malus 'Jewelberry' | 01/27/2013 |
| Judd's Cherry Tree - Prunus x juddii | 02/06/2013 |
| Katsura tree - Cercidiphyllum japonicum | 02/23/2013 |
| Kentucky Coffee Tree - Gymnocladus dioicus | 01/05/2013 |
| Kentucky Wisteria - Wisteria macrostachya | 01/07/2013 |
| Kingdom Fungi Index | 03/21/2013 |
| Klehm Prairie Crabapple - Malus ioensis 'Klehmii' | 02/07/2013 |
| Klemmer Holland Elm - Ulmus x hollandica 'Klemmer' | 01/31/2013 |
| Kobus Magnolia - Magnolia kobus | 02/28/2013 |
| Korean Ash - Fraxinus chinensis | 03/01/2013 |
| Korean Mountain-Ash - Sorbus alnifolia | 01/19/2013 |
| Korean Pine - Pinus koraiensis | 01/31/2013 |
| Koyama Spruce - Picea koyamae | 01/31/2013 |
| Lacebark Pine - Pinus bungeana | 01/31/2013 |
| Lancelot Crabapple - Malus 'Lanzam' | 02/07/2013 |
| Large-Fruited Elm - Ulmus macrocarpa | 01/31/2013 |
| Lead Plant - Amorpha canescens | 05/16/2013 |
| Lenne Saucer Magnolia - Magnolia x soulangiana 'Lennei' | 01/09/2013 |
| Leonard Messel Magnolia - Magnolia x loebneri 'Leonard Messel' | 01/11/2013 |
| Liaotung Oak - Quercus liaotungensis | 02/28/2013 |
| Lilliputian Saucer Magnolia - Magnolia x soulangiana 'Lilliputian' | 03/02/2013 |
| Limber Pine - Pinus flexilis | 01/31/2013 |
| Liset Crabapple - Malus 'Liset' | 03/11/2013 |
| Little Walnut - Juglans microcarpa | 03/02/2013 |
| Little-Leaf Linden - Tilia cordata | 12/28/2012 |
| Little-Leaved Clematis - Clematis microphylla | 05/17/2013 |
| Loose-Flowered Hornbeam - Carpinus laxiflora var. macrostachya | 02/23/2013 |
| Louisa Crabapple - Malus 'Louisa' | 02/07/2013 |
| Mahaleb Cherry - Prunus mahaleb | 01/26/2013 |
| Manchurian Alder - Alnus hirsuta | 02/28/2013 |
| Manchurian Birch - Betula platyphylla var. mandshurica | 02/18/2013 |
| Manchurian Crabapple - Malus baccata var. mandshuria | 01/26/2013 |
| Manchurian Fir - Abies nephrolepis | 01/31/2013 |
| Manchurian Hazelnut - Corylus sieboldiana var. mandshurica | 02/28/2013 |
| Maria Crabapple - Malus 'Maria' | 01/26/2013 |
| Marmo Freeman's Maple - Acer x freemanii 'Marmo' | 02/28/2013 |
| Mary Potter Crabapple - Malus 'Mary Potter' | 02/12/2013 |
| May's Delight Crabapple - Malus 'May's Delight' | 01/26/2013 |
| Merrill's Loebner Magnolia - Magnolia x loebneri 'Merrill' | 01/18/2013 |
| Michel Buchner Common Lilac - Syringa vulgaris 'Michel Buchner' | 02/21/2013 |
| Miyabe Maple - Acer miyabei | 02/28/2013 |
| Miyama Cherry Tree - Prunus maximowiczii | 03/02/2013 |
| Mock Orange - Philadelphus x virginalis | 03/01/2013 |
| Moltke Linden - Tilia x moltkei | 01/15/2013 |
| Mongolian Linden - Tilia mongolica | 12/31/2012 |
| Mongolian Oak - Quercus mongolica var. grosseserrata | 02/28/2013 |
| Moor Birch - Betula pubescens | 03/02/2013 |
| Morel Mushrooms | 03/21/2013 |
| Mougeot Whitebeam - Sorbus mougeotii | 02/05/2013 |
| Mugo Pine - Pinus mugo | 01/31/2013 |
| Needle Fir - Abies holophylla | 01/31/2013 |
| Needle Juniper - Juniperus rigida | 02/19/2013 |
| Nikko Elm - Ulmus laciniata var. 'nikkoensis' | 01/31/2013 |
| Nordic Spire™ Arborvitae | 03/03/2013 |
| Nordmann Fir - Abies nordmanniana | 01/31/2013 |
| North American Insects and Spiders / Tree Encyclopedia | 05/03/2013 |
| Northern Japanese Magnolia - Magnolia kobus var 'borealis' | 02/01/2013 |
| Norway Maple Tree - Acer platanoides "Crimson King" | 05/18/2013 |
| Norway Spruce - Picea abies | 01/31/2013 |
| Nova Zembla Rhododendron | 03/26/2013 |
| Nutall Oak - Quercus nuttallii | 02/15/2013 |
| O'Connor Juniper - Juniperus virginiana 'Glauca O'Conneri' | 01/31/2013 |
| Oakleaf Mountain-Ash - Sorbus x thuringiaca | 03/02/2013 |
| Ohio Buckeye - Aesculus glabra | 02/28/2013 |
| Oklahoma Buckeye - Aesculus glabra var. monticola | 02/28/2013 |
| Olga Bay Larch - Larix gmelinii var. 'olgensis' | 01/31/2013 |
| Oriental Arborvitae - Platycladus orientalis | 02/19/2013 |
| Oriental Beech - Fagus orientalis | 02/28/2013 |
| Oriental White Oak - Quercus aliena | 02/28/2013 |
| Ormiston Roy Crabapple - Malus 'Ormiston Roy' | 01/25/2013 |
| Orphan Tree Species | 03/02/2013 |
| Osage Orange Tree - Maclura pomifera | 01/07/2013 |
| Osage Silk Thorn - x Macludrania hybrida | 01/07/2013 |
| Painted Maple - Acer mono | 05/18/2013 |
| Paper Birch - Betula papyrifera | 03/01/2013 |
| Paperbark Maple - Acer griseum | 02/28/2013 |
| Pecan - Carya illinoinensis | 01/17/2013 |
| Peking Lilac Tree - Syringa pekinensis | 02/21/2013 |
| Pendent Silver Linden - Tilia petiolaris | 01/15/2013 |
| Pennsylvania Hawthorn - Crataegus tatnalliana | 02/07/2013 |
| Perfect Purple Crabapple - Malus 'Coppurple' | 01/25/2013 |
| Perfecta Chinese Juniper - Juniperus chinensis 'Perfecta' | 03/01/2013 |
| Persian Ironwood - Parrotia persica | 02/28/2013 |
| Pillar Apple - Malus tschonoskii | 01/25/2013 |
| Pin Oak - Quercus palustris | 02/12/2013 |
| Pink Princess™ Crabapple - Malus 'Parrsi' | 01/25/2013 |
| Pink Satin Crabapple - Malus 'Pink Satin' | 01/25/2013 |
| Pink Spires Crabapple - Malus 'Pink Spires' | 01/25/2013 |
| Pinyon Pine - Pinus edulis | 02/27/2013 |
| Plum-leaved Crabapple - Malus prunifolia | 01/25/2013 |
| Poison Ivy - Toxicodendron radicans | 02/28/2013 |
| Polish Common Juniper - Juniperus communis 'Cracovia' | 05/16/2013 |
| Ponderosa Pine - Pinus ponderosa | 01/31/2013 |
| Port Orford Cedar - Chamaecyparis lawsoniana | 03/01/2013 |
| Prairie Crabapple - Malus ioensis | 02/18/2013 |
| Prairie Maid Crabapple - Malus 'Prairie Maid' | 01/25/2013 |
| Pratt's Crabapple - Malus prattii | 01/25/2013 |
| Prickly Pear Cactus - Opuntia spp. | 02/28/2013 |
| Primrose Rose - Rosa primula | 01/25/2013 |
| Prince Rupprecht Larch - Larix gmelinii var. principis-rupprechtii | 01/31/2013 |
| Proctor's Magnolia - Magnolia x proctoriana | 02/28/2013 |
| Professor Sprenger Crabapple - Malus 'Professor Sprenger' | 01/25/2013 |
| Profusion Crabapple - Malus 'Profusion' | 02/05/2013 |
| Purple Apricot - Prunus dasycarpa | 02/05/2013 |
| Purple Prince Crabapple - Malus 'Purple Prince' | 02/05/2013 |
| Pyramidal Black Alder - Alnus glutinosa 'Pyramidalis' | 02/16/2013 |
| Ralph Shay Crabapple - Malus 'Ralph Shay' | 05/18/2013 |
| Red Barron Crabapple - Malus 'Red Barron' | 02/05/2013 |
| Red Cedar - Juniperus virginiana | 02/19/2013 |
| Red Jewel Crabapple - Malus 'Red Jewel' | 02/06/2013 |
| Red Maple Tree - Acer rubrum 'Red Sunset' | 03/11/2013 |
| Red Oak - Quercus rubra | 02/12/2013 |
| Red Peacock Crabapple - Malus 'Red Peacock' | 01/25/2013 |
| Red Pine - Pinus resinosa | 12/20/2012 |
| Red Sunset Maple - Acer rubrum 'Franksred' | 05/17/2013 |
| Red Swan Crabapple - Malus 'Red Swan' | 01/25/2013 |
| Redbird Crabapple - Malus 'Redbird' | 01/25/2013 |
| Redbud Crabapple - Malus x zumi 'Calocarpa' | 03/02/2013 |
| Redmond Linden - Tilia x euchlora | 12/30/2012 |
| Rejoice Crabapple - Malus 'Rejzam' | 01/25/2013 |
| River Birch - Betula nigra | 03/01/2013 |
| Rivers Flowering Chinese Crabapple - Malus spectabilis 'Riversii' | 02/07/2013 |
| Robinson Crabapple - Malus 'Robinson' | 02/05/2013 |
| Rock Elm - Ulmus thomasii | 01/31/2013 |
| Rocky Mountain Juniper - Juniperus scopulorum | 02/19/2013 |
| Rohrbach Star Magnolia - Magnolia stellata 'Rohrbach' | 01/11/2013 |
| Royal Raindrops Crabapple - Malus 'JFS-KW5' | 02/05/2013 |
| Royalty Crabapple - Malus 'Royalty' | 02/05/2013 |
| Ruby Luster Crabapple - Malus 'Ruby Luster' | 02/05/2013 |
| Russian Boxwood - Buxus 'Russian' | 03/03/2013 |
| Russian Elm - Ulmus laevis | 01/31/2013 |
| Sand Pear - Pyrus pyrifolia | 05/16/2013 |
| Sargent Cherry - Prunus sargentii | 05/17/2013 |
| Sargent's Cranberry Bush - Viburnum sargentii | 01/21/2013 |
| Sassafras - Sassafras albidum | 02/28/2013 |
| Saucer Magnolia - Magnolia x soulangiana | 02/28/2013 |
| Sawara Cypress - Chamaecyparis pisifera | 02/19/2013 |
| Scarlet Brandywine™ Crabapple - Malus 'Scbrazam' | 02/02/2013 |
| Scarlet Oak - Quercus coccinea | 01/17/2013 |
| Schlesinger Red Maple - Acer rubrum 'Schlesingeri' | 02/28/2013 |
| Schmidt's Birch - Betula schmidtii | 02/18/2013 |
| Schoch Oak - Quercus X schochiana | 02/28/2013 |
| Scholar Tree - Sophora japonica | 01/07/2013 |
| Scotch Elm, Wych Elm - Ulmus glabra | 01/31/2013 |
| Scots Pine - Pinus sylvestris | 02/06/2013 |
| Selkirk Crabapple - Malus 'Sekirk' | 01/25/2013 |
| Sentinel Crabapple - Malus 'Sentinel' | 02/05/2013 |
| Serbian Spruce - Picea omorika | 01/31/2013 |
| Shagbark Hickory Tree - Carya ovata | 02/23/2013 |
| Shantung Maple - Acer truncatum | 05/17/2013 |
| Shellbark Hickory - Carya laciniosa | 03/02/2013 |
| Shensi Fir - Abies chensiensis | 01/31/2013 |
| Shining Sumac - Rhus copallina var. latifolia | 01/17/2013 |
| Showy Cockspur Hawthorn - Crataegus crus-galli var. splendens | 02/07/2013 |
| Shumard Oak - Quercus shumardii | 02/14/2013 |
| Siberian Alder - Alnus hirsuta var. sibirica | 01/22/2013 |
| Siberian Crabapple - Malus baccata | 01/25/2013 |
| Siberian Elm - Ulmus pumila | 01/31/2013 |
| Siberian Larch - Larix sibirica | 01/31/2013 |
| Siebold Viburnum - Viburnum sieboldii | 12/30/2012 |
| Silkworm Thorn - Cudrania tricuspidata | 01/07/2013 |
| Silver King Juniper - Juniperus scopulorum 'Silver King' | 03/01/2013 |
| Silver Linden - Tilia tomentosa | 12/31/2012 |
| Smooth Sumac - Rhus Glabra | 03/26/2013 |
| Smooth-Leaved Elms - Ulmus carpinifolia 'Wredei' and 'Koopmanii' | 01/31/2013 |
| Snakeskin Maple - Acer grosseri | 02/28/2013 |
| Sour Gum Tree - Nyssa sylvatica | 02/28/2013 |
| Southern Black Haw - Viburnum rufidulum | 01/22/2013 |
| Sparkler Crabapple - Malus 'Sparkler' | 02/04/2013 |
| Speckled Alder - Alnus incana | 02/18/2013 |
| Spindle Tree - Euonymus nikoensis | 01/22/2013 |
| Spring Grove Giant Arborvitae - Thuja plicata 'Grovepli' | 08/25/2012 |
| Star Power™ Juniper - Juniperus 'J.N. Select Blue' | 02/19/2013 |
| State Street Miyabe Maple | 02/28/2013 |
| Strawberry Parfait Crabapple - Malus 'Strawberry Parfait' | 01/25/2013 |
| Striped Maple - Acer pensylvanicum | 02/28/2013 |
| Subalpine Fir - Abies lasiocarpa | 01/31/2013 |
| Sugar Maple - Acer saccharum | 03/21/2013 |
| Sugar Tyme™ Crabapple - Malus 'Sutyzam' | 02/03/2013 |
| Sugarberry - Celtis laevigata | 01/31/2013 |
| Sullivan Port Orford Cedar - Chamaecyparis lawsoniana 'Sullivan' | 03/03/2013 |
| Sulphur Shelf Fungus - Laetiporus sulphureus | 03/21/2013 |
| Sunburst Honey Locust Tree - Gleditsia triacanthos 'Sunburst' | 01/07/2013 |
| Sunkist Eastern Arborvitae - Thuja occidentalis 'Sunkist' | 03/03/2013 |
| Swamp Cottonwood - Populus heterophylla | 03/10/2013 |
| Swamp White Oak - Quercus bicolor | 02/12/2013 |
| Swedish Juniper - Juniperus communis | 01/21/2013 |
| Swedish Whitebeam - Sorbus intermedia | 02/01/2013 |
| Sweet Birch - Betula lenta | 02/16/2013 |
| Sweet Gum - Liquidambar styraciflua | 02/02/2013 |
| Table Mountain Pine - Pinus pungens | 03/11/2013 |
| Tapestry Rhododendron | 03/11/2013 |
| Tea Crabapple - Malus hupehensis | 01/25/2013 |
| Technito™ Eastern Arborvitae - Thuja occidentalis 'Bail John' | 03/03/2013 |
| Temple's Upright Sugar Maple | 03/21/2013 |
| Texas Redbud - Cercis canadensis 'Texensis' | 01/07/2013 |
| Thornless Honey Locust Tree - Gleditsia triacanthos | 03/02/2013 |
| Tilford Red Maple - Acer rubrum 'Tilford' | 02/28/2013 |
| Toringo Crabapple - Malus sieboldii | 01/25/2013 |
| Tree Encyclopedia | 03/11/2013 |
| Tree Encyclopedia Index | 05/19/2013 |
| Trident Maple - Acer buergerianum | 02/28/2013 |
| Trinity Callery Pear - Pyrus calleryana 'Trinity' | 02/19/2013 |
| Triumph Elm - Ulmus 'Morton Glossy' | 01/31/2013 |
| Tschonoski Maple - Acer tschonoskii | 02/28/2013 |
| Tuliptree - Liriodendron tulipifera | 02/01/2013 |
| Turczaninov Hornbeam - Carpinus turczaninovii | 01/21/2013 |
| Twisty Baby Black Locust - Robinia pseudoacacia 'Lacy Lady' | 01/07/2013 |
| Umbrella Black Locust - Robinia pseudoacacia 'Umbraculifera' | 01/05/2013 |
| Umbrella Horse Chestnut - Aesculus hippocastanum 'Umbraculifera' | 01/21/2013 |
| Umbrella Magnolia - Magnolia tripetala | 01/11/2013 |
| Upright Silver Linden - Tilia tomentosa 'Erecta' | 12/31/2012 |
| Ussurian Pear - Pyrus usseriensis | 01/25/2013 |
| Vanguard Elm - Ulmus 'Morton Plainsman' | 01/31/2013 |
| Village Green Zelkova - Zelkova serrata var. 'Village Green' | 02/01/2013 |
| Wada's Memory Magnolia - Magnolia kobus 'Wada's Memory' | 02/28/2013 |
| Water Locust Tree - Gleditsia aquatica | 01/07/2013 |
| Weeping European Beech - Fagus sylvatica var. 'Pendula' | 02/20/2013 |
| Weeping Katsura - Cercidiphyllum japonicum 'pendulum' | 02/23/2013 |
| Weeping Mulberry - Morus alba 'Pendula' | 01/07/2013 |
| Weston's Mayflower Rhododendron | 05/16/2013 |
| White Ash - Fraxinus americana | 03/01/2013 |
| White Birch Tree - Betula papyrifera | 02/17/2013 |
| White Fir - Abies concolor | 01/31/2013 |
| White Fragrant Viburnum - Viburnum farreri 'Album' | 01/21/2013 |
| White Mulberry - Morus alba | 02/28/2013 |
| White Oak - Quercus alba | 02/01/2013 |
| White Poplar - Populus alba | 01/09/2013 |
| White Satin Birch - Betula 'White Satin' | 01/31/2013 |
| White Tigress Maple - Acer tegmentosum | 02/28/2013 |
| White Willow - Salix alba | 01/13/2013 |
| Whitebark Magnolia - Magnolia hypoleuca | 01/11/2013 |
| Wild Pear - Pyrus pyraster | 01/31/2013 |
| Wild Plum - Prunus americana | 01/25/2013 |
| Winged Elm - Ulmus alata | 01/31/2013 |
| Winterberry - Ilex verticillata 'Sparkleberry' | 01/10/2013 |
| Winterberry Euonymus - Euonymus bungeanus | 02/22/2013 |
| Witch-Hazel - Hamamelis virginiana | 02/28/2013 |
| Yellow Buckeye - Aesculus flava | 01/16/2013 |
| Yulan Magnolia - Magnolia denudata | 01/11/2013 |
| Yunnan Crabapple - Malus yunnanensis | 01/30/2013 |
