Wintering roses not for MN zone
Hello, I purchased three rose bushes this year that I have in large, above-ground, pots (16 inches wide by 13 inches tall). I was told by the woman at the checkout that these roses are not zoned for MN, so in the winter they would either need to be pulled inside or possibly well insulated. I wanted to know what the best course of action would be for winter, as we're approaching the cold weather (bringing inside vs. insulating with mulch/burlap, etc). If I do insulate them, would it be best to pull them into the garage (non-heated garage)? Also, the canes/stems are at full height still. I know I should prune them back before I store them and was wondering how much length I should leave from the base of the main stem (where it starts from the dirt in the pot)? Thank you so much for any help you can provide. Tracy
Since they're already potted, I would overwinter them in the pots, in your garage. Since it's not insulated, you will still want to cover them, straw and burlap is a good choice. I would recommend cutting the canes back to about 10 inches tall. I will include two links below on overwintering roses. The second includes information on how to overwinter them once they're planted, if you plan on doing that.