How To Care For Knock Out Roses In Winter. 12102019 Prune potted Knock Out roses when buds begin to swell in late winter. Foliar feedings from then on until the last feeding of the season works just fine to keep them well-fed happy and blooming.
2252021 How to Care for and Protect Knockout Roses in the Winter. Foliar feedings from then on until the last feeding of the season works just fine to keep them well-fed happy and blooming. 9212017 Remove the winter protection measures in early spring after the last hard frost has passed in your region.
Watch for problems normally associated with roses such as insects or disease.
Buds might start forming early if the winter was especially mild. Remove crowded growth in the center to allow sun and air to reach the center of the plant. Prune the Knock Out canes back so that there is roughly a foot to 18 inches of height from the ground. The best place to make your final cut is a quarter-inch above an outward-facing bud or sprout.