Here’s a link that has a gret list of Viburnum hardy in zone 4. You’ll need to scroll down to the V secton to find them.
https://www.mda.state.mn.us/plants-insects/cold-hardiness-list#shrubs
Peter Bowden Answered question
Here’s a link that has a gret list of Viburnum hardy in zone 4. You’ll need to scroll down to the V secton to find them.
https://www.mda.state.mn.us/plants-insects/cold-hardiness-list#shrubs