Quercus buckleyi | Albuquerque, New Mexico
Moving south from Colorado, we find another Rocky Mountain city, Albuquerque, New Mexico also using Texas Red Oak (Quercus buckleyi). One of the keys to understanding where the Texas Red Oak thrives is soil. To use a broad but useful generalization, soils get more alkaline as you travel west in the United States. High summer moisture leads to acidic soils, while drier conditions, especially deserts, lower the pH. Texas Red Oak comes from a place where the east to west change begins tilting toward alkaline, making the tree adaptable throughout the western US. Texas Red Oak also grows in the highly inhospitable conditions of urban Tuscon, Arizona, in the heavily-visited University Avenue area.