Ask a plantsperson most anywhere in the country whether boxwoods could survive an hour’s drive from Lake Superior and more than likely the answer will be a definitive “No”. To most folks, boxwoods are associated with the southeastern and Mid-Atlantic regions, with the White House and grand old southern estates. However (and this is no secret to people living there), certain boxwoods do thrive in the Minneapolis/St. Paul area. In order to push the envelope so to speak into an even colder region, I decided many years ago to test as many potentially cold-hardy boxwood species, varieties, and cultivars as I could find at my home near Hayward in northwestern Wisconsin.
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Published in Minnesota Rock Plant Notes, a newsletter of the Minnesota Rock Garden Society.