Treating Root Collar Disorder
The root collar of a tree can be defined as an area of the lower trunk that transitions from trunk tissue to root tissue. It is typically associated with the basal flare, or the trunk flare of the tree, which is the wider portion of trunk that insects the ground. Healthy tree trunks typically have a well-defined trunk flare at the ground level. However, many urban trees don’t have an identifiable trunk flare at the soil surface.