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 Recommended Trees
Denver requires that all street trees (trees planted in the public right-of-way) are approved by the city forester and are permitted. The planting permit is free and verifies the suitability of the proposed species and planting locations.
 
For a detailed list of acceptable trees for planting in the public right-of-way and their growth characteristics, download Forestry’s approved street tree list. To quickly check the status of a tree you wish to plant, refer to the Street Tree List to the right.
 
Please note: do not pre-buy any trees not listed for planting in the public right-of-way as they may not be permitted. Call 720-913-0651 or email Lori Biewick to request a planting consultation with one of Forestry’s Arboreal Inspectors or a planting permit.
 
The planting of the following trees and classes of plants are prohibited in the public right-of-way by Parks and Recreation rules and regulations:

            Poplar species (Populus spp.),
            Willow species (Salix spp.),
            Boxelder (Acer negundo),
            Siberian elm (Ulmus pumila),
            Weeping or pendulous trees,

Trees with bushy growth habits that cannot be maintained to a single stem, and Shrubs or hedges that, by their growth habit, would obstruct, restrict, or conflict with the necessary and safe use of the public rights-of-way.
 
The planting of the following trees is temporarily suspended (for various reasons) in the public right-of-way. Please call the forestry office for more details regarding any of these moratoriums. 

            Silver maple (Acer saccharinum) and its hybrids,
            Evergreen conifers, 
            Ash species (Fraxinus spp.),
            Sunburst honeylocust (Gleditsia triacanthos inermis ‘Sunburst’),
            Mulberry species (Morus spp.),
            Tree-of-heaven (Ailanthus altissima),
            Russian-olive (Elaeagnus angustifolia),
            Trees with thorns on the main stem or lower canopy, and
            Trees with fleshy fruits over ½-inch in diameter.
 
None of the above lists are meant to be all-inclusive, and trees not included on any list will be handled on a case-by-case basis.
 
Please call the forestry office and schedule a planting consultation prior to purchasing any plant material for the public right-of-way.
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 Trees Recommended for Private Property
The following trees, while recommended for private property planting, may not be planted in the public right-of-way because of one or more of their growth characteristics.
 
Our recommendations for trees on private property include all those listed in the linked Street Tree Guide above, plus the following:
Botanical Name Common Name Cultivar(s) Height @ Maturity Canopy Spread @ Maturity
Abies concolor White Fir   50 30
Acer rubrum Red Maple   50 40
Albizia julibrissin Mimosa (Silktree)   25 25
Alnus cordata Italian Alder   40 25
Alnus glutinosa Black (European) Alder   40 25
Alnus incana ssp. tenuifolia Thinleaf Alder   25 20
Amelanchier canadensis Shadblow Serviceberry   15 15
Carpinus betulus European Hornbeam   35 25
Carpinus caroliniana American Hornbeam   20 20
Carya glabra Pignut Hickory   50 30
Cedrus libani Cedar of Lebanon   50 50
Cladrastis lutea American Yellowwood   35 40
Crataegus mollis Downy Hawthorn   25 25
Crataegus phaenopyrum Washington Hawthorn   25 25
Fagus grandifolia American Beech   40 30
Fagus sylvatica European Beech Purpurea Tricolor, Roseomarginata, Riversii 40 40
Juniperus scopulorum Rocky Mountain Juniper   40 15
Juniperus virginiana Eastern Redcedar   45 20
Larix decidua European Larch   60 30
Maclura pomifera Osage-orange   35 35
Malus cv. Crabapple Adams, Bechtel, Brandywine, Centurian, Coralburst, David, Dolgo, Donald Wyman, Indian Summer, Prairiefire, Radiant, Red Baron, Sugar Tyme, Thunderchild 25 25
Metasequoia glyptostroboides Dawn-redwood   40 20
Parrotia persica Persian Ironwood   25 15
Picea abies Norway Spruce   55 25
Picea englemannii Englemann's Spruce   50 20
Picea glauca White Spruce var. densata (Black Hills Spruce) 50 20
Picea omorika Serbian Spruce   50 25
Picea pungens Colorado Spruce   60 20
Pinus aristata Bristlecone Pine   20 20
Pinus flexilis Limber Pine Vanderwolf's 45 30
Pinus jefferyi Jeffrey Pine   75 30
Pinus monticola Western White Pine   70 30
Pinus nigra Austrian Pine   50 35
Pinus ponderosa Ponderosa Pine   75 30
Pinus strobus Eastern White Pine   55 25
Pinus sylvestris Scots Pine   55 30
Prunus maackii Amur Chokecherry   30 30
Prunus virginiana var. melanocarpa Green Chokecherry   15 15
Pseudotsuga menziesii Douglas-fir   80 40
Pyrus ussuriensis Ussurian Pear   25 20
Quercus gambelii Gambel Oak   20 20
Quercus undulata Wavyleaf Oak   15 15
Sequoiadendron giganteum 'Hazel Smith'
Hazel Smith giant-sequoia
  60 30
Sorbus aria Swedish whitebeam   40 20
Sorbus aucuparia European Mountain-ash   30 20
Taxodium distichum Baldcypress   60 30
Viburnum prunifolium Blackhaw Viburnum   15 15
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 Forestry Page Links
  

 Street Tree List
This list is provided as a quick referrence guide to check whether a tree is acceptable as a street tree in Denver. For a more detailed listing with descriptions of the trees, please download Denver Forestry's acceptable street tree list.
 
Botanical Name Common Name
Acer campestre Hedge Maple
Acer glabrum Rocky Mountain Maple
Acer grandidentatum Bigtooth Maple
Acer griseum Paperbark Maple
Acer miyabei Miyabe Maple
Acer nigrum Black Maple
Acer pseudoplatanus Sycamore Maple
Acer saccharum Sugar Maple
Acer tataricum Tatarian Maple
Acer triflorum Three-flower Maple
Acer truncatum Shangtung Maple
Aesculus flava Yellow Buckeye
Aesculus glabra Ohio Buckeye
Aesculus hippocastanum Common Horsechestnut
Aesculus x carnea Red Horsechestnut
Alnus cordata Italian Alder
Alnus glutiosa Common (Black) Alder
Amelanchier canadensis Shadblow Serviceberry
Amelanchier x grandiflora Apple Serviceberry
Carpinus betulus European Hornbeam
Carpinus caroliniana American Hornbeam
Carya glabra Pignut Hickory
Carya ovata Shagbark Hickory
Catalpa speciosa Northern Catalpa
Celtis laevigata Sugar Hackberry
Celtis reticulata Netleaf Hackberry
Celtis occidentalis Common Hackberry
Cercidiphyllum japonicum Katsuratree
Cercis canadensis Eastern Redbud
Corylus colurna Turkish Filbert
Crataegus ambigua Russian Hawthorn
Crataegus crus-galli inermis Thornless Cockspur Hawthorn
Crataegus laevigata English Hawthorn
Crataegus x mordensis Morden Hawthorn
Eucommia ulmoides Hardy Rubber-tree
Ginkgo biloba Ginkgo
Gleditsia triacanthos inermis Thornless Honeylocust
Gymnocladus dioicus Kentucky Coffeetree
Koelreuteria paniculata Goldenraintree
Liquidamber styraciflua Sweetgum
Liriodendron tulipifera Tulip Tree
Maackia amurensis Amur maackia
Malus cv Crabapple
Parrotia persica Persian Ironwood
Phellodendron amurense Amur Corktree
Phellodendron lavallei Lavalle Corktree
Platanus occidentalis American Sycamore
Platanus x acerifolia London Planetree
Prunus cerasifera Purpleleaf Plum
Prunus padus Mayday Tree
Prunus serotina Black Cherry
Prunus x fontanesiana DeFontaine's Cherry
Pyrus calleryana Callery Pear
Pyrus fauriei Fauriei Pear
Quercus alba White Oak
Quercus bicolor Swamp White Oak
Quercus buckleyi Texas Red Oak
Quercus imbricaria Shingle Oak
Quercus lyrata Overcup Oak
Quercus macrocarpa Bur Oak
Quercus michauxii Swamp Chestnut Oak
Quercus muehlenbergii Chinkapin Oak
Quercus palustris Pin Oak
Quercus prinus Chestnut Oak
Quercus robur English Oak
Quercus shumardii Shumard Oak
Quercus velutina Black Oak
Quercus x mazei Colorado Foothills Oak
Robinia pseudoacacia Blacklocust
Styphnolobium japonicum Japanese Pagodatree
Syringa pekinensis Chinese Tree Lilac
Syringa reticulata Japanese Tree Lilac
Tilia americana American Linden
Tilia cordata Littleleaf Linden
Tilia mongolica Mongolian Linden
Tilia tomentosa Silver Linden
Ulmus americana American Elm
Ulmus japonica Japanese Elm
Ulmus parvifolia Lacebark Elm
Ulmus x Hybrid Elms
Viburnum prunifolium Blackhaw Viburnum
Zelkova serrata Japanese Zelkova
 
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