Hello,

I live in zone 6b, and am trying to plant native Colorado plants both edible and inedible on my property. This year I would like to focus on a privacy hedge where my property runs along a highway. My pasture has about a 10-15 foot drop and then is along the shoulder of the highway. I am hoping to plant something to allow us some privacy, security and prevent erosion, as this drop is not reinforced in anyway. The plants that I have been looking at are Silver Buffaloberry, Curl-Leaf Mahogany and Alderleaf Mahogany. I am unsure the differences, if any between the mahogany varieties. I am drawn more towards the mahogany because they can be more evergreen,  and would like to still have some privacy in the winter time as well as their drought tolerance. My pasture also has our septic leech filled and buried infrastructure for our geothermal heating. These plants will be planted 10-20 feet away from that infrastructure but I do need to be mindful of root growth. 

What I would desire most in a privacy hedge is: 8+ feet high, something that grows in thick (both for privacy and security), drought resistant ideally not needing additional water after being established, deer resistant or will survive being nibbled, and soil stabilization/erosion control. If any of my ideas would be better than the others or if you could recommend something else it would be so greatly appreciated. Thank you!