Tree & Shrub Hardiness Standards
Trees labeled as "Non Hardy" are Zone 4 and are considered NOT hardy to our zone.  Grand Rapids and most of the surrounding area is classified as ZONE 3b.

However, there are many Zone 4 trees
(Marked "Non-Hardy") that have been successfully grown in our area.  Always wrap and protect your trees that are Zone 4 as much as possible in the fall to provide adequate winter protection.  We suggest doing this for all your trees.  

Remember that the USDA Hardiness Zone Map is created based on average annual minimum temperatures and should only be used as a general guide.  In addition to zones, plan maintenance and care is just as important to determine hardiness in this area.