Anytime you see "Siberian" as the common name of the plant you can generally infer two things - (1) it is a native to Northern Asia (Siberia) and (2) it tolerates very deep cold winters.
I've always loved the best specimens of Microbiota. Although, while I have gone through many phases over the past 20 years where I have experimented with this plant, I can't say I have many examples I can turn to so I can share a glorious image. They are reputed to be a difficult transplant and perhaps this is why there are so few great examples.
None the less. We'll keep trying. 😎 I'm not giving up on this relationship just yet.
Landscape designer and Proprietor of Buffalo Horticulture