It's best to prune rose bushes in the spring, well after the last frost. While roses are hardy plants, pruning them while it is still too cold discourages new growth. If someone wishes to prune their roses too late in the season, it is recommended that the bush is pruned well above the desired length, then again in the spring.
The location when planting Double Knockout Roses makes the difference. It is important you give enough consideration as where to plant it. The double knockout roses are little different type of plants when compared to others. They can actually grow well in hard to grow places too. Just that, you need to find some shady and sunny area to plant them. Hope this helps.
You can prune climbing roses to 'train' them to grow the way you want them to. If you want them to grow up a trellis, or over an arch, etc., then you need to prune them in the shape or direction in which you want them to grow. You also need to prune away dead parts to allow for new growth. And it will not harm the rose bush to prune it; the root system…
Howdy from Coach Dave, Your knockout roses most likely need some fertilizer, pruning, and mulch for the season change. All plants have a bloom cycle and need to be trimmed if you want blooms to continue. As a last tip remember, over fertilizing will slow down blooms, so use as directed. Happy Gardening, Coach Dave
When in doubt, the best time to prune is during or right after blooming. I like to prune during the blooming time because then I can bring the beautiful blooms into the house. The rule is if it flowers before July prune after flowering. If it flowers after July prune it the following Spring. This works. If you prune during blooming you will cut the flowers off.