Where Amelia Island demanded mastery over humidity and salt air, Anchorage tests Black Limba against the other extreme — prolonged cold, radical interior-to-exterior temperature differentials, and the bone-dry forced-air environments that define subarctic construction. In these conditions, the golden brown heartwood's tendency to darken with age accelerates unevenly if moisture content isn't precisely calibrated before installation, and those dramatic grey-to-black streaks can telegraph even minor substrate movement that warmer climates might forgive. Rosebud's specifications for Anchorage projects account for these stresses at the material selection stage, favoring sequenced flitches whose sapwood-to-heartwood gradation remains consistent enough to accommodate the dimensional tolerances Alaska's climate demands. That same precision — adapted now from tropical moisture to arctic aridity — follows the grain eastward into Ann Arbor, where the Great Lakes introduce yet another set of environmental variables.