D.B.H. is measured on the uphill side of a tree at how far from the ground?

The correct measurement for Diameter at Breast Height (D.B.H.) is typically taken at 4.5 feet above the ground. This standard height is used in forestry and arboriculture to ensure consistency and accuracy when measuring tree diameter. Measuring at this specific height allows for a reliable comparison of tree sizes, as it minimizes the influence of variations in tree taper or irregularities in the trunk.

While other heights such as 3.5 feet or 6 feet are sometimes mentioned in discussions about tree measurements, they are not conventionally accepted for baseline tree diameter measurements. Thus, using 4.5 feet helps to create a standard reference point for assessing tree health, volume, and management practices.