what hardiness zone is colorado springs
Northern parts of Montana, North Dakota and Minnesota are in the coldest zone in the U.S., Zone 3. Colorado Springs is in Zone 5b. Black Forest is in Zone 5a. Teller County, like most of our mountain areas, is in Zone 4. But there are other important factors that affect our growing season. Some 40 years ago Sunset magazine developed zone maps which cover Colorado and 12 other Western states.