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Lauren Kurtz Professional Gardener.

Knock Out Roses Pruning Steps: To maintain a size of 3–4’ w x 3–4’ h, Knock Out Roses should be cut back once a year to 12” high.

Thin out dead, weak, and old growth; reduce plant size according to type of rose and the demands of your climate.

Check your rose bush from time to time in late winter/early spring, and when you start to see new shoots growing from the canes on your rose bush, that’s a good sign that it’s time to prune. Oct 07, Knockout roses are a relatively low-fuss variety that can make a welcome addition to any yard or garden, but they do require a little seasonal pruning in order to grow healthy and beautiful.

Cut back your roses 96%. For long-lasting, easy color, plant Knock Out roses. Low maintenance and disease resistant, they love to bloom.

The original 'Knock Out' rose has cherry red single petals. 'Pink Knock Out' has beautiful pink single petals. There are also double flower forms of both red and pink. 'Blushing Knock Out' offers light pink shrubdrop.buzzted Reading Time: 7 mins.

Sep 17, Tips for Pruning Knock Out Roses. The Knock Out group of shrub roses blooms repeatedly every five to six weeks throughout the growing season.

There are varieties with both single and double flowers. The plants typically grow no more than 3 or 4 feet tall with a similar spread, and they tend to be more resistant to diseases than most shrubdrop.buzzted Reading Time: 5 mins. Mar 01, Remove and discard any dead, crowded, crossed or rubbing branches. The goal is to open up the plant’s center and eliminate unnecessary suckers or random shoots. Cut the rose bush back by 1/3 to 1/2 the size.

With severe heavy pruning, the plant can be cut down to 18″″ depending on how large the rosh bush was. Tip: Wipe off the cutting blades of the pruner with antibacterial wipes before moving to a different rose shrubdrop.buzzted Reading Time: 4 mins.