can an evergreen in permanent large planter survive the winter ?
Asked July 12, 2017, 10:42 AM EDT
I am trying to achieve visual and sound barrier from busy street on other side of fence. Would like to use large planter next to fence. Shrub or dwarf evergreen tree would need to be about 5 to 6 ft. height.
Thank you for the question. Most shrubs will not survive in containers outside in a typical MN winter because of our drying wind, freeze thaw cycles, and roots being above ground where they are subject to freezing temperatures. Sometimes gardeners grow shrubs in pots during the warm season and then sink the entire plant in the pot, in the ground, water well and mulch 12 inches deep for the winter. Even then, there are no guarantees and moving trees that are 5-6 feet tall in large planters into the ground isn't feasible.
If you want shrubs in this situation, you need to plant them in the ground. You might find this publication helpful: http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/selecting-shrubs-for-minnesota-landscapes/
Thank you for contacting Extension.