Dieback |
Where a branch or stem progressively dies from the tips downward , the symptom is described as dieback . Note that this is not the same as the presence of deadwood in the tree , which is a normal condition .
Dieback across the whole canopy can be a result of root damage , infection or decay fungi .
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Fungal fruiting bodies |
In some cases , fungal fruiting bodies may be identified growing around the infected roots . Fruiting bodies may be evidence of root damage or decay but are unlikely to be a significant concern for tree rescue operations unless large forces are required to be applied to the tree ’ s structure . |
Dieback across multiple trees in the same area may be a sign of soil or water-borne fungal infection , including the root-rot fungus Phytophthora cinnamomi as an example . |
Visible surface damage |
Exposed roots or trunk root buttress can be inspected , and in some cases the damage can be identified by inspection . Significant damage , in particular recent damage such as excavation , should be treated with care as tree stability may be compromised . |