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Rating the Stem Condition <br />Cambium loss <br />Cambium loss can be caused by pruning wounds, accidental damage, vandalism, and winter injury <br />(Figure 9 and 10). <br />• Up to 3 points can be deducted if 50% or more of the stem's circumference is girdled; a tree <br />that is 25% girdled would lose about 1.5 points. <br />• Vertical cambium loss is not counted, only add up circumferential loss. <br />• Girdling refers to the removal or loss of bark and phloem from around the circumference of a <br />branch or trunk. <br />Figure 9 - Cambium Loss (Source: Lydia Voth) <br />Figure 10 - Cambium Loss <br />(Source: <br />https://dallasnews.imgix.net/1499099950-6_22_17_Good pruning_cut_from_3_angles.jpg?auto=format%2C <br />enhance&crop=Laces%2Centropy&fit=crop&q=40&or=0&w=1024&h=543) <br />18 <br />