Deciduous trees, including shade and flowering trees, may be:
(1) Bare Root
(2) Balled and Burlapped
(3) Machine Dug into Wire Baskets
(4) Processed Ball
(5) Container Grown
(6) In-Ground Fabric Container
Descriptions: Three types of deciduous trees are considered separately as follows:
Dwarf, Formal and Topworked (grafted) Trees
This group includes many small trees grown as standards, (topworked or grafted). The maximum height at maturity for this group is usually 600 cm.
Specify the following:
(a) Height of the stem in appropriate cm
(b) The size and / or age of the head.
(c) The caliper of the stem, when the caliper exceeds 40 mm
Acer platanoides ‘Globosum’/200 cm stem, 60 cm head
Catalpa bignonioides ‘Nana’/200 cm stem, 50 mm caliper, 60 cm head
Caragana arborescens ‘Pendula’/125 cm stem, 40 cm/2yr. head
Caliper must be the determining measurement when the caliper exceeds 40 mm. It must be measured no less than 15 cm above the ground level for trees with a caliper up to 100 mm. Trees 100 mm and larger caliper are to be measured 30 cm above the ground level.
Standard Shade Trees includes large growing shade trees which may be suitable for streets, boulevards, parks, residential or industrial use. They can also be used as screens and shelter belts.
Gleditsia triacanthos cultivars
Standard Shade Trees must have straight sturdy trunks, with a well branched and balanced head. Branching structure of the head will vary according to species, height, age and climatic/cultural conditions. A dominant, central leader will not necessarily be evident or expected at a certain age of a tree’s maturity or be typical of its natural growth habit. This form of indeterminate or diffuse branching should be recognized and considered acceptable when bid specifications are given.
Height must be as follows:
in 25 cm increments from 100 cm to 200 cm
in 50 cm increments from 200 cm to 500 cm
in 100 cm increments from 500 cm and over
Height of Branching (Street Trees)
Bid specifications for trees for street plantings should specify the height to which the tree should be free of branching. Height of branching should bear a relationship to the size and kind of tree.
Standard Shade Trees Measured by Height
|Caliper||Overall Height||Minimum Number of Branches in Head|
|40 mm||250 - 300 cm||8|
|45 mm||300 - 350 cm||9|
|50 mm||350 - 400 cm||10|
|Overall Approximate Height||Caliper||Minimum Number of Branches in Head||Minimum Root Spread|
|200 - 250 cm||20 mm||3||40 cm|
|250 - 300 cm||25 mm||5||45 cm|
|250 - 300 cm||30 mm||6||50 cm|
|300 - 350 cm||35 mm||7||60 cm|
|60 - 80 cm||10 mm|
|80 - 100 cm||10 mm|
|100 - 125 cm||15 mm|
|125 - 150 cm||15 mm|
|150 - 175 cm||20 mm|
|175 - 200 cm||20 mm|
|200 - 250 cm||20+mm|
|Approximate Height Range||Caliper||Ball Diameter||Approximate Ball Depth||Approximate Ball Weight|
|250 - 300 cm||40 mm||60 cm||40 cm||150 kg|
|300 - 425 cm||50 mm||70 cm||40 cm||200 kg|
|350 - 500 cm||60 mm||70 cm||40 cm||200 kg|
|425 - 550 cm||70 mm||80 cm||50 cm||300 kg|
|450 - 575 cm||80 mm||90 cm||50 cm||400 kg|
|475 - 600 cm||90 mm||90 cm||50 cm||400 kg|
|500 - 625 cm||100 mm||100 cm||50 cm||600 kg|
|550 - 700 cm||125 mm||120 cm||80 cm||1200 kg|
|600 - 775 cm||150 mm||150 cm||80 cm||1500 kg|
|650 - 825 cm||175 mm||175 cm||80 cm||1800 kg|
|700 - 825 cm||200 mm||200 cm||80 cm||2000 kg|
|Height Range||Approximate Caliper||Container Top Diameter||Container Size|
|50 - 80 cm||8 mm||15 - 19||#1|
|80 - 125 cm||10 mm||19 - 23||#2|
|100 - 150 cm||15 mm||23 - 26||#3|
|150 - 250 cm||20 - 30 mm||25 - 31||#5|
|200 - 300 cm||30 - 35 mm||31 - 36||#7|
|250 - 350 cm||35 - 40 mm||38 - 40||#10|
|300 - 400 cm||40 - 45 mm||38 - 44||#15|
|350 - 450 cm||45 - 50 mm||43 - 45||#20|
|400 - 500 cm||50 - 60 mm||50 - 60||#25|
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