Wednesday 30 April 2014

Small Trees for Urban Use
This is for information purposes only; Arbortech does not supply and install trees.
While all of the trees on this list have been selected by Arbortech staff for general reliability and availability, success of establishment will vary by site conditions, therefore, pick wisely, based on your own research, this list is a starting point.
The purpose of this list is to aide our clients in selecting trees for their landscape needs. With lots becoming smaller and houses becoming bigger, there is less room for landscaping. If more space is available, smaller trees allow greater numbers, thus more diversity within the landscape.
Select your plants carefully from the nursery when purchasing; choose well branched trees with straight unscarred trunks, with no broken limbs, well centered in the pot or root ball. Look for signs that the tree has been well cared for at the nursery.
In the following list, trees marked with an asterisk are generally quite durable but as with most plants, there are disease and pest problems associated with each. Learn what these are and watch for them. We have selected these plants to have a minimum of concerns under a wide variety of conditions.
The definition of a small tree for the purposes of this list might be considered as follows:
·         A woody plant consisting of 3 or fewer stems (usually a single stem)
·         No taller than 8 meters (25 ft.) in height at maturity (25 years) There is no limit to crown spread.
Root spread can vary greatly but the root volume will be roughly equivalent to that of the crown with most of the feeding roots in the top 30 cm (12 in) of soil.
For full development to take place, we must assume the tree(s) have an unrestricted growth area with good growing conditions and adequate water for “normal” development, away from pollutants and harmful conditions.
In no particular order:
Common Name                                                          Botanical Name
Paper Bark Maple*                                             Acer grisseum
Japanese Maple*                                               Acer palmatum ‘Bloodgood’
Serviceberry*                                                    Amelanchier canadensis
Eastern Redbud*                                               Cercis canadensis
Alternate Leaf Dogwood*                                   Cornus alternifolia
Kousa Dogwood*                                              Cornus kousa
Flowering Dogwood                                          Cornus florida
Cornelian Cherry*                                               Cornus mas
Witch Hazel (Shrubby)                                       Hamamelis virginiana
Sargent Crab Apple*                                          Malus Sarentii
Star Magnolia (and others)                                 Magnolia stellate
American Hornbeam/ Muscle Wood*                  Carpinus caroliniana
Fringe Tree                                                        Chionanthus virginicus                          
Smoke Tree                                                       Cotinus obovatus
Maidenhair Tree                                                 Ginko biloba ‘Jade Butterflies’
Japanese Tree Lilac                                           Syringa reticulata ‘Ivory Silk’
Dwarf Hinoki Cypress*                                       Chamaecyparis obtusa ‘Nana’
Limber Pine                                                       Pinus flexilis ‘Vanderwolf’s Pyramid’
Mugo Pine                                                         Pinus mugo
Japanese Yew                                                   Taxus cuspidata ‘Capitata’
Hick’s Yew                                                         Taxus media ‘Hicksii’
Dwarf Alberta Spruce*                                        Picea glauca ‘Conica’
Hedge Maple                                                    Acer campestre
Amur Maple                                                      Acer ginnala
Crimson Cloud Hawthorn (and others)                 Crataegus laevigata ‘Crimson Cloud’
Bradford Pear                                                   Pyrus calleryana ‘Chanticleer’
Globe Norway Maple                                         Acer platinoides ‘Globosum’     
Oak-leaf Mountain Ash                                       Sorbus x hybrid

Some taller pyramidal trees (narrow growth habit)
Weeping Copper Beech                                     Fagus sylvatica ‘purpurea pendula’ “Purple Fountain”
Maiden Hair Tree                                                Ginko biloba ‘fastigiata’
Pyramidal English Oak                                       Quercus robur f. fastigiata
Black Cedar                                                       Thuja occidentalis ‘Nigra’


Each of these trees adds a dimension to the landscape, leaf texture, flower, fall colour, fruit or a combination of elements.