T5.2 Overall Height Grades
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Height Grades |
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cm |
Form |
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10-15 |
Seedling |
80-100 cm height TRANSPLANT |
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15-20 |
Seedling |
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20-25 |
Seedling |
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25-30 |
Seedling, transplant |
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30-40 |
Seedling, transplant |
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40-50 |
Seedling, cutting, transplant |
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50-60 |
Seedling, cutting, transplant |
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60-80 |
Seedling, cutting, transplant |
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80-100 |
Seedling, cutting, transplant |
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100-125 |
Seedling, cutting, transplant |
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For Cell grown trees and shrubs the following height grades are used: |
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cm |
Form |
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10-20 |
Seedling |
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20-40 |
Seedling |
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40-60 |
Seedling |
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60-90 |
Seedling |
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Height Grades |
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cm |
Form of tree |
Girth |
Mark colour |
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80-100 |
whip/feathered |
yellow |
125-150 cm height FEATHERED TREE |
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100-125 |
whip/feathered |
white |
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125-150 |
whip/feathered |
blue |
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150-175 |
whip/feathered |
red |
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175-200 |
whip/feathered |
yellow |
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200-250 |
whip/feathered |
blue |
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For larger feathered trees (6-8 cm +) the girth grade becomes more significant in specification than the overall height.
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Height Grades - Clear stem standards and larger feathered trees |
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cm |
Form of tree |
Girth |
Mark colour |
425-600 cm height, 14-16 cm girth STANDARD TREE (Acer platanoides 'Emerald Queen') |
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250-300 |
Light |
6-8 |
blue |
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250-300 |
Standard |
8-10 |
yellow |
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300-350 |
Selected |
10-12 |
red |
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350-400 |
Heavy |
12-14 |
white |
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400-450 |
Extra heavy |
14-16 |
blue |
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450-500 |
Extra heavy |
16-18 |
yellow |
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450-500 |
Extra heavy |
18-20 |
red |
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500-550 |
Semi-mature |
20-25 |
white |
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600-650 |
Semi-mature |
25-30 & 30-35 |
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700-750 |
Semi-mature |
35-40 & 40-45 |
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750-800 |
Semi-mature |
45-50 & 50-60 |
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Although height grades are given for these larger trees, the height
becomes less significant. This
should be used as a guide to choose and specify the correct girth of
the trees. |
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Height Grades - Multi-stemmed and Bushy forms |
300-350 cm height BUSHY TREE (Acer campestre) |
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cm |
Form |
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200-250 |
Multi stem/bushy |
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250-300 |
Multi stem/bushy |
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300-350 |
Multi stem/bushy |
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350-400 |
Multi stem/bushy |
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400-500 |
Multi stem/bushy |
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500-600 |
Multi stem/bushy |
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Although multi stemmed and bushy trees are specified primarily by OVERALL HEIGHT (qualifying also the ROOT PROTECTION and the SIZE OF CONTAINER, if appropriate) they may also be specified by reference to the number of stems and/or main branches arising from or near ground level and also a measure of the diameter of the head. For example, Betula pendula is typically specified with 2 stems or with 3 stems. An indication of the girth of the thinnest or average stem may also be indicated. | ||||
