Gardeners who enjoy roses are finding the Knock Out Rose to be a lovely addition to any sunny landscape. Knock Out Roses are a hybrid rose created and presented for sale in 1999. The popularity of these roses is largely because of the simplicity with which you can successfully grow these beautiful roses. Knock Out Roses do not require extensive care or maintenance and they will bloom beautifully throughout the entire growing season.
Apply a 3-inch layer of mulch around the base of the Knock Out Rose plant to conserve soil moisture and prevent weeds from growing near the rose bush.
Water the Knock Out Rose bush if the weather is dry. Make sure Knock Out Roses receive at least 1 inch of water each week. When you water, carefully direct the water around the base of the plant without splashing water onto the foliage. Splashing water on rose foliage can often lead to unsightly water spots.
Fertilize Knock Out Roses with an all-purpose rose bush fertilizer every four to six weeks during the growing season. Mix the fertilizer with water according to package recommendations for the size of your Knock Out Rose and pour it carefully around the base of the bush.
Deadhead the Knock Out Roses throughout the growing season for best blooming results. Use the pruning shears to remove the spent blossoms approximately 2 inches below the blossoms. Do not remove more stem than this because you could remove future blossoms.
Prune the Knock Outs in late winter or early spring while the plant is still dormant. Remove any branches that cross to avoid rubbing. Find the oldest and woodiest canes (canes that are the darkest brown color) and remove these. Look for damaged or dead canes and cut these canes out.