Q.Hardiness Of Dwarf English Boxwood
I like the compact, small, rounded look for individual specimen planting. Live in Wisconsin on edge of zones 4 and 5. Are deer resistant which I need. No growers in my area carry them. Is that because of cold tolerance issue? Willing to order online from away if confident would survive our winters. Advice?

Certified GKH Gardening Expert
Have you had English boxwoods before? I don't know about the dwarf species, but the standard English boxwoods put out a cat urine smell. We have an article about it. I will also include a publication that has the cultivars of boxwood in the nursery trade. Some are hardy to zone 4 and 5 and some are not. Korean boxwood seems to be the hardiest. Hope this helps.
https://www.pubs.ext.vt.edu/content/dam/pubs_ext_vt_edu/426/426-603/HORT-290.pdf
https://www.gardeningknowhow.com/ornamental/shrubs/boxwood/boxwood-has-bad-odor.htm