Our Voronoi Diagram stem maps show the neighboring trees, i.e., all neighboring trees with diameters greater than 5cm at breast height. Live tree boles are brown, with a green diamond depicting crown radii measured to the North, East, South, and West. Dead tree boles are shown in red. The tree of interest's crown diamond is highlighted in blue and its bole is rectangular rather than circular. Grey lines between trees define areas closest to the midpoint of the stem of each live tree. This visualization is part of the Tree Catalog.