Recommended Trees for Dublin, Ohio is designed to encourage an imaginative selection of landscape trees. Careful selection will prevent an over-dependence on a few species. This compilation will be useful to residents, nurserymen, horticulturists, landscapers, developers and landscape architects. Planting and maintaining a diverse urban forest is the goal of Dublin's tree programs. This idea is reflected in landscape plan approval by the Dublin Planning and Zoning Department and in tree planting and replacement by the Dublin Parks and Recreation Department.
Along an individual street, uniform street tree plantings are desirable. However, over-use of a few species is inevitable without a conscious effort to vary plant species and families. Diversity is achieved in Dublin by varying species selected for each street. Information on street tree assignment is available from the offices of the Dublin Planning and Zoning Department and the Dublin Parks and Recreation Department. Deviations from the recommended list are permitted with the approval of the Dublin Planning and Zoning Department.
This list is divided into three size categories: large trees which mature at a height of 50 feet or more (Group A); medium trees reaching a mature height of between 30 and 50 feet (Group B); and small trees which range from 10 to 30 feet at maturity (Group C). Tree lawn sizes must accommodate the tree size planted: Group A (> 7 ft.), Group B (4-7 ft.), Group C (3-4 ft.). Use under utility lines is limited to small trees, although medium trees may be planted as close as 10 lateral feet to utility lines.
The approximate mature height and diameter of each tree's crown are given.
Trees are alphabetized by their scientific name with the common name given. Cultivars best suited to Central Ohio are also provided. An asterisked entry indicates a tree which is unsuitable for planting within 15 lateral feet of a sidewalk or bikeway.
Habit refers to the three dimensional form of the tree. Six general terms describe the characteristic shape of the trees:
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The tolerance category presents information from various sources listed in the bibliography. The tree's relative tolerance to insects, diseases, pollution, and soil conditions are signified by either a “Y”, meaning yes, it is tolerant; “N”, meaning no, it is not tolerant; or “-”, meaning no information is available from these sources.
The comments pertain to any other notable characteristic of the tree.
APPROVED STREET TREES FOR COMMERCIAL/OFFICE/INDUSTRIAL SITES
REFER TO SEPARATE STREET TREE LIST
LARGE DECIDUOUS TREES (50 feet or greater) - GROUP A | ||||||||
Common Name (Scientific name) "Cultivar" | Height (ft.) | Spread (ft.) | Habit | Tolerance | Comments | |||
insect/ disease | pollution | dry soil | damp soil | |||||
Norway Maple (Acer plantanoides) "Cleveland" "Emerald Queen" "Summer Shade" | 40-50 | 40-50 | globular | N | Y | Y | Y | dense shade and shallow roots inhibit turf |
Red Maple (Acer rubrum) "Autumn Flame" "October Glory" "Red Sunset" | 40-60 | 40-50 | ovoid to globular | Y | N | N | Y | suffers in urban environment; outstanding fall color |
Sugar Maple (Acer saccharum) "Green Mountain" "Legacy" | 60-75 | 50-60 | ovoid to globular | Y | N | N | N | attractive fall color |
Black Adler (Alnus glutinosa) | 40-60 | 20-40 | obovoid to globular | Y | Y | Y | Y | naturally a multi-stemmed tree; may prune to a single trunk |
Sugar Hackberry (Celtis laevigata) | 60-80 | 50-60 | globular | Y | Y | Y | Y | smooth bark |
Katsura Tree (Cercidiphyllum japonicum) | 40-60 | 30-50 | obovoid | Y | Y | N | Y | single or multi-stemmed; fall color an interesting apricot |
American Yellowwood (Cladrastis lutea) | 30-50 | 40-55 | obovoid | N | N | Y | - | white flowers; select those with wide branch angles |
Turkish Filbert* (Corylus colurna) | 40-50 | 30-40 | ovoid to conical | Y | Y | Y | Y | produces nuts in a sticky husk that are a delicacy to squirrels |
Hardy Rubber Tree (Eucommia ulmoides) | 40-60 | 40-70 | conical to globular | Y | Y | Y | Y | dark green canopy |
White Ash (Fraxinus americana) "Autumn Applause" "Autumn Purple" | 50-80 | 40-70 | irregular to globular | N | - | N | Y | beautiful fall color |
Green Ash (Fraxinus pennsylvanica) "Marshall's Seedless" "Summit" | 50-60 | 30-40 | irregular to globular | N | - | Y | Y | overplanted in Dublin |
Autumn Gold Ginkgo (Ginkgo biloba) "Autumn Gold" | 50-80 | 30-60 | conical to globular | Y | Y | Y | Y | a male variety which does not fruit |
Kentucky Coffee Tree* (Gymnocladus dioicus) | 60-75 | 40-50 | irregular to ovoid | Y | Y | Y | N | fruit may be objectionable; coarse texture |
Sweetgum (Liquidambar styraciflua) "Moraine" | 60-75 | 40-50 | conical to globular | Y | N | N | Y | messy star-shaped fruit |
Larch (Larix decidua) | 70-75 | 20-30 | conical | N | N | N | Y | deciduous conifer |
Black Gum (Nyssa sylvatica) | 30-50 | 20-30 | conical to ovoid | Y | - | Y | Y | brilliant fall color |
Swamp White Oak (Quercus bicolor) | 50-60 | 50-70 | ovoid | Y | Y | Y | Y | attractive scaly bark |
Scarlet Oak (Quercus coccinea) | 70-75 | 40-50 | globular | N | N | Y | N | red fall color |
Shingle Oak (Quercus imbricaria) | 50-60 | 50-70 | conical | Y | Y | Y | Y | leaves retained into winter |
Red Oak (Quercus rubra) | 60-75 | 40-50 | ovoid to globular | Y | Y | Y | Y | russet-red fall color |
Shumard Oak (Quercus shumardii) | 70-75 | 40-50 | ovoid to globular | Y | Y | Y | Y | a replacement for pin oak |
Sassafrass (Sassafras albidum) | 30-60 | 25-40 | conical to irregular | Y | Y | Y | Y | outstanding fall color |
Bald Cypress (Taxodium distichum) | 50-70 | 20-30 | conical | Y | Y | Y | Y | characteristic knees develop in wet soils |
Redmond Linden (Tilia americana) "Redmond" | 40-50 | 25-30 | ovoid | N | Y | Y | Y | Japanese beetles may attack foliage |
Silver Linden (Tilia tomentosa) | 50-70 | 30-40 | ovoid | N | Y | Y | Y | Japanese beetles may attack foliage |
Urban Elm (Ulmus X "Urban Elm") | 50-70 | 25-40 | obovoid | Y | Y | Y | Y | resistant to Dutch Elm disease |
Lacebark Elm (Ulmus parvifolia) | 40-50 | 30-40 | obovoid | Y | Y | Y | Y | exquisite mottled bark; resistant to Dutch Elm disease |
MEDIUM DECIDUOUS TREES (30-50 ft.) - GROUP B | ||||||||
Common Name (Scientific name) "Cultivar" | Height (ft.) | Spread (ft.) | Habit | Tolerance | Comments | |||
insect/ disease | pollution | dry soil | damp soil | |||||
Hedge Maple (Acer campestre) | 25-35 | 20-35 | globular | Y | Y | Y | Y | dense canopy |
Thornless Honeylocust (Gleditsia triacanthos) var. inermis "Imperial" "Morain" "Shade Master" "Skyline" | 35-50 | 20-35 | irregular to globular | N | Y | Y | Y | overplanted, use moderately; delicate form |
Goldenraintree (Koelreuteria paniculata) | 30-40 | 30-50 | globular | Y | Y | Y | Y | coarse texture |
American Hophornbeam (Ostrya virginiana) | 25-40 | 20-35 | conical | Y | - | Y | Y | transplant in spring |
Amur Cork Tree (Phellodendron amurense) | 30-45 | 30-50 | obovoid | Y | Y | Y | Y | broad-spreading |
Sargent Cherry (Prunus sargentii) "Columnaris" | 40-50 | 30-45 | globular | Y | - | - | - | stately bark; lovely early pink blossoms |
Callary Pear (Pyrus calleryana) "Aristocrat" "Chanticleer" "Red Spire" | 30-50 | 20-35 | conical to ovoid | N | - | Y | N | commonly planted "Bradford" exhibits poor branch structure leading to splitting |
Sawtooth Oak (Quercus acutissima) | 35-45 | 35-45 | ovoid to globular | N | - | Y | N | chestnut-like leaf shape |
SMALL DECIDUOUS TREES (10-30 ft.) - GROUP C | ||||||||
Common Name (Scientific name) "Cultivar" | Height (ft.) | Spread (ft.) | Habit | Tolerance | Comments | |||
insect/ disease | pollution | dry soil | damp soil | |||||
Trident Maple (Acer buergerianum) | 20-30 | 20-25 | globular | Y | Y | Y | N | dark green leaf |
Amur Maple (Acer ginnala) | 15-20 | 10-20 | obovoid to globular | Y | Y | Y | Y | grown multi-stemmed or as a single trunk |
Paperbark Maple (Acer griseum) | 20-30 | 10-30 | globular to ovoid | Y | - | N | Y | unequaled bronze, exfoliating bark |
Serviceberry (Amelachier arborea) | 15-25 | 7-10 | obovoid | Y | N | Y | Y | early white flowers; delicate form; single or multi-stemmed |
Fringe Tree (Chionanthus virginicus) | 10-20 | 10-20 | obovoid | Y | Y | Y | Y | fragrant, white flowers; lovely tree when single-stemmed |
Thornless Cockspur* Hawthorn (Crateegus crusgalli) var. inermis "Crusader" | 20-30 | 20-35 | globular | N | Y | Y | Y | most cockspurs are dangerous, however, this one lacks thorns |
Lavalle Hawthorn* (Crataegus X lavallei) | 15-30 | 10-25 | globular | N | Y | Y | Y | nearly thornless; showy red fruit |
Washington Hawthorn* (Crataegus phaenopyrum) | 25-30 | 20-25 | globular | N | Y | Y | Y | thorns; red fruit persists into winter |
Dotted Hawthorn* (Crataegus punctata) "Ohio Pioneer" | 25-30 | 25-35 | globular | N | Y | Y | Y | few thorns; attractive bark large 1" fruit |
Winter King Hawthorn* (Crateagus viridis) "Winter King" | 20-35 | 15-30 | globular | N | Y | Y | Y | few thorns; fruit persists into winter; attractive bark |
Japanese Tree Lilac (Syringa reticulata) "Ivory Silk" | 20-30 | 15-25 | obovoid | Y | Y | Y | Y | flowers in June |
Blackhaw Viburnum (Viburnum prunifolium) | 12-15 | 8-12 | globular | Y | Y | Y | Y | blue-black fruit; prune to a tree form Crabapple (Malus) |
"Adams" | 20-25 | - | globular | Y | Y | - | - | reddish pink flowers; red fruit |
"Baskatong" | 30 | - | - | Y | Y | - | - | purple-red flowers; dark purple-red fruit |
"Centurion" | 20-25 | - | columnar | Y | Y | - | - | rose-red flowers; cherry-red fruit |
"Donald Wyman" | 20-25 | 20-30 | globular | Y | Y | - | - | white flowers; red fruit |
"Harvest Gold" | 20 | 15 | obovoid | Y | Y | - | - | white flowers; gold fruit |
"Henningi" | 25 | - | obovoid | Y | Y | - | - | white flowers; orange-red fruit |
"Prairiefire" | - | - | - | Y | Y | - | - | red flowers; maroon fruit |
"Ralph Shay" | - | - | - | Y | Y | - | - | retains red fruit "Robinson"25-obovoidYY--deep pink flowers; dark red fruit |
"Sentinel" | - | - | columnar | Y | Y | - | - | pale pink flowers; red fruit |
"Snow Drift" | 15-25 | - | globular | Y | Y | - | - | profuse white flowers; orange-red fruit; fire-blight in nearby states |
"Sugar Tyme" | 18 | 15 | obovoid | Y | - | - | - | white flowers; red fruit |
"Spring Snow" | 20-25 | - | obovoid | Y | - | - | - | white flowers; fruitless |
"White Angel" | 20-25 | - | obovoid | Y | - | - | - | white flowers; red fruit |
"Winter Gold" | 30 | - | - | Y | - | - | - | white flowers; yellow fruit |
UNACCEPTABLE TREES FOR STREET TREE USE
Common Name Scientific Name
Box Elder Acer negundo
Silver Maple Acer saccharinum
Buckeye, Horsechestnut Aesculus species
Tree of Heaven Ailanthus altissima
Paper Birch Betula papyrifera
European White Birch Betula pendula
Northern Catalpa Catalpa speciosa
Ginko (female) Ginko biloba
Osage-orange Maclura ponifera
Apple Malus punila
Mulberry Morus species
Poplar Populus species
Bradford Pear Pyrus calleryana "Bradford"
Upright English Oak Quercus robur "fastigiata"
Black Locust Robinia pseudoacacia
Willow Salix species
European Mountain Ash Sorbus aucuparia
Moline American Elm Ulmus americana "Moline"
Siberian Elm Ulmus pumila
Number of varieties per street. As a rule, streets are more attractive when they contain only one kind of tree. In new allotments where an entire street is to be planted it is suggested that the property owners agree on a single variety. Although the planting along one street may be of a single variety, any one community should have a dozen or more kinds. The use of several varieties adds interest to the street-tree plantings of the city and insures against the loss of all trees in case of an epidemic disease striking any one species. The International Society of Arboriculture's “Diversification Formula” will be used as a guideline to prevent overplanting of a single tree species or family. This formula states that, out of the total tree planting, no more than 10% should be from one family, and no more than 5% should be of one species. Subdividers or developers are requested to consult with the Landscape Planner for a list of the current recommended street trees; those from Appendix E, Recommended Trees for Dublin, and those species and/or families that do not exceed the Diversification Formula.
Where to obtain trees. Trees shall be nursery grown in accordance with good horticultural practices, and grown under climatic conditions similar to those in Central Ohio for a minimum of two years. Trees shall meet current standards set by the American Association of Nurserymen and shall be freshly dug, have outstanding form and be free of disease, insects and/or damage.
Planting and Care. In general it will be more satisfactory to engage a nurseryman, arborist or someone familiar with tree care to do the planting. If the property owner does the planting, he/she should familiarize himself/herself with the requirements of successfully transplanting trees. Information on shade tree planting and care can be obtained from the Dublin Planning and Zoning Department; the Ohio Department of Natural Resources, Division of Forestry, Columbus, Ohio; the Agricultural Extension Service, The Ohio State University, Columbus, Ohio; or the Ohio Agricultural Research and Development Center, Wooster, Ohio. Trees shall be planted in accordance with the requirements specified in § 152.138(A)(1) to (9) of the Dublin Planning and Zoning Code, and following the guidelines in the Dublin Planting Manual. Proper watering is extremely important for trees the first two years following transplanting. During dry periods, add enough water to soak the soil to root depth once a week. Transplanted trees can be overwatered; if the soil is heavy and drains poorly, the trees can be injured by too much water as well as too little. Bark mulch applied to the soil around the tree will help conserve moisture.
('80 Code, Appendix E) (Am. Ord. 9-95, passed 3-6-95)