This document summarizes information about 11 tree species native to Western Macedonia, Greece. It provides details on the appearance, habitat, uses, and other characteristics for each tree, including the black poplar, oriental plane tree, walnut tree, European beech, Macedonian oak, Bulgarian fir, European alder, sweet chestnut, and Bosnian pine. Key details provided include tree height, leaf shape and arrangement, flower/fruit structures, habitat ranges, longevity, uses of wood/nuts, and conservation status for some species.