A fellow that I have gotten to know well though my oldest sons church said that he has used them and felt they were fine to deal with. He did not have anything bad to say about them or the stuff he bought through them. I liked the idea that they were located in Upstate NY because it gets cold up there. My middle son lived in Utica NY for several years. When he 1st moved there the weather report was for from 1 ft to 4 feet of snow, his comment to me was, " Dad, I have never had a Snow that I couldn't measure with a Yard Stick "
He was maybe an hour east of the finger lakes where Millers is located. The lakes do really help to moderate the cold, they have a lot of fruit production up there, especially grapes for wine. I still feel a little bit more confident buying from a Northern Nursery as far as winter hardiness goes. I am sure that George feels the same about buying from a southern nursery for heat tolerant plants. It just makes sense to me that if a tree has been growing in Upstate Ny then it should grow here. Yes I know they most likely start the seedlings inside a green house, but as they grow I am sure they have been set out side because of space limitations. So they have survived at least one Northern winter, maybe two.
Never doubt that a small group of dedicated people can change the world, indeed it is the only thing that ever has.