I have had my planters for over a year now.  I live in Minnesota and they held up beautifully over our harsh winter.  Make sure the water is drained out of them if you leave them up over the winter.  They are super easy to remove from the holders so if you wanted to store them in your garage, that would also be simple, and probably a good idea.  I would buy these again in a head beat.  Well worth the money. Paying for a quality product.