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Selecting the Right Tree in London

Are you ready to plant a tree at your home, business or school? Be an informed consumer! Use this guide to help you choose the right tree for your London area location. Buy and plant trees from the Green and Yellow lists only to promote conservation of native species in southwestern Ontario.

Why choose native species? Native species:

  • are easier to maintain
  • are adapted to the region, so they handle climate extremes and other stressors better
  • provide suitable wildlife habitat
  • don't disrupt local ecosystems
BEST CHOICES
These trees are native to southwestern Ontario and grow naturally in the London area. They are adapted to the local climate, and are hardier and easier to maintain than non-native species. Some have quite specific soil and moisture requirements and may not do well in all sites, so check their requirements before you buy them
Scientific Name Common Name
MAPLES  
Acer pensylvanicum STRIPED MAPLE
Acer rubrum RED MAPLE
Acer saccharinum SILVER MAPLE
Acer saccharum SUGAR MAPLE
Acer saccharum f. nigra BLACK MAPLE
Acer spicatum MOUNTAIN MAPLE
SERVICE BERRIES  
Amelanchier arborea JUNEBERRY
Amelanchier laevis SMOOTH SHADBUSH
BIRCHES  
Betula alleghaniensis YELLOW BIRCH
Betula papyrifera WHITE BIRCH
HICKORIES  
Carya cordiformis BITTERNUT HICKORY
Carya glabra (C. ovalis)* PIGNUT HICKORY
Carya laciniosa* SHELLBARK HICKORY
Carya ovata SHAGBARK HICKORY
DOGWOODS  
Cornus alternifolia ALTERNATE-LEAVED DOGWOOD
Cornus florida FLOWERING DOGWOOD
HAWTHORNS  
Crataegus calpodendron HAWTHORN
Crataegus chrysocarpa HAWTHORN
Crataegus compacta HAWTHORN
Crataegus crus-galli COCKSPUR THORN
Crataegus dodgei HAWTHORN
Crataegus mollis HAWTHORN
Crataegus pringlei HAWTHORN
Crataegus pruinosa HAWTHORN
Crataegus punctata DOTTED HAWTHORN
Crataegus succulenta HAWTHORN
ASHES  
Fraxinus americana WHITE ASH
Fraxinus nigra BLACK ASH
Fraxinus pennsylvanica RED ASH
Fraxinus profunda* PUMPKIN ASH
Fraxinus quadrangulata* BLUE ASH
POPLARS AND ASPENS  
Populus balsamifera BALSAM POPLAR
Populus deltoides COTTONWOOD
Populus grandidentata LARGETOOTH ASPEN
Populus tremuloides TREMBLING ASPEN
PLUMS AND CHERRIES  
Prunus americana AMERICAN WILD PLUM
Prunus nigra CANADA PLUM
Prunus pensylvanica PIN CHERRY
Prunus serotina WILD BLACK CHERRY
OAKS  
Quercus alba WHITE OAK
Quercus bicolor SWAMP WHITE OAK
Quercus macrocarpa BUR OAK
Quercus muehlenbergii CHINQUAPIN OAK
Quercus rubra RED OAK
Quercus shumardii* SHUMARD OAK
Quercus velutina BLACK OAK
SUMACS  
Rhus glabra SMOOTH SUMAC
Rhus typhina STAGHORN SUMAC
ELMS  
Ulmus americana AMERICAN ELM
Ulmus rubra SLIPPERY ELM
CONIFERS  
Juniperus virginiana RED-CEDAR
Larix laricina TAMARACK
Pinus strobus WHITE PINE
Thuja occidentalis EASTERN WHITE CEDAR
Tsuga canadensis HEMLOCK
OTHERS  
Asimina triloba* PAWPAW
Carpinus caroliniana BLUE-BEECH
Castanea dentata* AMERICAN CHESTNUT
Celtis occidentalis HACKBERRY
Fagus grandifolia AMERICAN BEECH
Gymnocladus dioicus* KENTUCKY COFFEE TREE
Juglans cinerea* BUTTERNUT
Juglans nigra BLACK WALNUT
Liriodendron tulipifera TULIP TREE
Magnolia acuminata* CUCUMBER MAGNOLIA
Malus coronaria WILD CRAB
Morus rubra* RED MULBERRY
Nyssa sylvatica* BLACK GUM
Ostrya virginiana HOP HORNBEAM
Platanus occidentalis SYCAMORE
Salix amygdaloides PEACH-LEAVED WILLOW
Sassafras albidum SASSAFRAS
Tilia americana BASSWOOD
   
USE WITH CAUTION 
These species do not grow naturally in the London area. Some of them are native to Ontario. Those in grey are non-native species that are not likely to become problem weeds. These trees may be used in landscaping projects, but should not be used for naturalization projects.
BUCKEYES AND HORSE CHESTNUT  
Aesculus glabra* OHIO BUCKEYE
Aesculus hippocastanum HORSE-CHESTNUT
CATALPAS  
Catalpa bignonioides SOUTHERN CATALPA
Catalpa speciosa NORTHERN CATALPA
PLUMS AND CHERRIES  
Prunus cerasifera CHERRY PLUM
Prunus cerasus SOUR or PIE CHERRY
Prunus domestica COMMON PLUM
Prunus persica PEACH
Prunus spinosa SLOE, BLACKTHORN
Prunus tomentosa NANKING CHERRY
APPLES AND PEARS  
Malus pumila APPLE
Pyrus communis PEAR
WILLOWS  
Salix nigra BLACK WILLOW
Salix pentandra BAY-LEAVED WILLOW
MOUNTAIN ASH  
Sorbus americana AMERICAN MOUNTAIN-ASH
Sorbus decora MOUNTAIN-ASH
CONIFERS  
Abies balsamea BALSAM FIR
Larix decidua EUROPEAN LARCH
Picea abies NORWAY SPRUCE
Picea glauca WHITE SPRUCE
Picea mariana BLACK SPRUCE
Pinus banksiana JACK PINE
Pinus nigra AUSTRIAN PINE
Pinus resinosa RED PINE
Pinus virginiana SCRUB PINE
OTHERS  
Acer pensylvanicum STRIPED MAPLE
Betula lenta CHERRY BIRCH
Cercis canadensis* REDBUD
Crataegus phaenopyrum WASHINGTON HAWTHORN
Gleditsia triacanthos* HONEY LOCUST
Juglans regia ENGLISH WALNUT
Maclura pomifera OSAGE ORANGE
Platanus hybrida PLANE TREE
Populus nigra LOMBARDY POPLAR
Quercus palustris* PIN OAK
Robinia viscosa CLAMMY LOCUST
   
AVOID
These are non-native species that have become problem weeds in southwestern Ontario. They grow fast and reproduce prolifically. When they escape into the wild they compete with native species and disrupt local ecosystems. They trees should not be planted under any circumstances and should be removed where possible to prevent further invasion.
MAPLES  
Acer ginnala AMUR MAPLE
Acer platanoides NORWAY MAPLE
Acer pseudoplatanus SYCAMORE MAPLE
PLUMS AND CHERRIES  
Prunus mahaleb PERFUMED CHERRY
Prunus avium SWEET CHERRY
WILLOWS  
Salix alba WHITE WILLOW
Salix fragilis CRACK WILLOW
Salix X rubens HYBRID WILLOW
CONIFERS  
Pinus sylverstris SCOTS PINE
OTHERS  
Ailanthus altissima TREE-OF-HEAVEN
Alnus glutinosa BLACK ALDER
Betula pendula EUROPEAN WHITE BIRCH
Crataegus monogyna ENGLISH HAWTHORN
Elaeagnus angustifolia RUSSIAN-OLIVE
Morus alba WHITE MULBERRY
Populus alba EUROPEAN WHITE POPLAR
Pyrus calleryana BRADFORD PEAR
Rhamnus cathartica COMMON BUCKTHORN
Robinia pseudoacacia BLACK LOCUST
Sorbus aucuparia EUROPEAN MOUNTAIN-ASH; ROWAN
Ulmus pumila SIBERIAN ELM
* listed as rare in Ontario non-native species in gray