Hi Barbara! I just found today that you had submitted a comment earlier this year. What will grow in general in our area depends on soil quality, how much wind it will be exposed to versus being somewhat sheltered, soil moisture, and sun exposure. Another consideration is whether there are already trees growing where you live. The most hardy are Siberian Elm, Rocky Mountain Juniper, Rhus Trilobata (aka skunkbush, among other monikers), New Mexico Forestiera, and Golden Currant. You may get about a 50% survival rate with Ponderosa Pine. In a more protected area offering some shelter from wind, better soil, and supplemental water, you could add lilacs, crabapples, silver buffaloberry, woods rose, Kansas hawthorn, honeysuckle, green ash, chokecherry (don’t let horses or other livestock eat chokecherry leaves).