I used to live in Tennessee and tried growing them there and didn't have any luck. I moved back to Indiana in 04 and live in the northern part of the sate. Have had some limited success here as they seem to like the cooler climates better. I do go to Eau Claire, MI every year to pick them, both the sweets and sours. the big thing I have found out about growing cherries is they seem to be more prone to diseases, pests, and weather. So far I have had only one year and that was last year (2013) that I got a small crop of cherries from my trees. My sour cherries (North Star and Montmorency) seem to be a little more hardy than the sweets (2 Rainer, Lapins, and a Windsor). Just my opinion and would like to see what others have to say about your post! This year with the harsh hard winter I didn't get any blooms, and then in their weakened state the aphids hit my sweet cherry trees and done some damage.