Search: Pruning roses

With cold weather approaching, several people have dropped by searching for information on pruning knockout and double knockout roses. Many of them end up at my post "Double Knockout Roses Kick Lantanas' Butt", which does not have specific information on when and how to prune knockout and other roses.


The good people at the nursery where I purchased my plants indicated that they handle pruning (and just about everything else) very well.

With any rose, it is a good idea to cut off any diseased or dead canes. It is also a good idea to make sure no canes are rubbing against one another. This light cutting can be done any time of year.

If you feel like dead heading (not required for knockout roses to perform), they way my mother taught me was to cut the stem above the first set of five leaves, at a 45 degree angle, with the lower edge of the cut on the same side as the leaves. When I lived in coastal California, this was most of what I did with my roses. Heavy pruning never really entered into the picture because of the mildness of the climate.

Around here, the traditional time for yearly rose pruning is around mid-February, usually on or near Valentine's Day. This way, any new growth isn't as likely to be zapped by excessive cold. For colder regions, this might vary. In general, it is my understanding that roses do not need to be pruned in preparation for winter, unless this will help you shelter them more effectively.

I have heard that heavy pruning of knockouts or any other shrub rose for the first two years after they have been planted is generally not recommended. This gives your shrub rose time to mature. Mine are still new and very short, so I don't think I'll be doing much in the pruning department this year.

As far as how to go about it, that's up to you. Some people just take an electric hedge trimmer and prune their roses into shapes. I have seen some used as box hedges around town. Since I personally prefer my roses to be in a more natural shape, I will not be doing that.

This page suggests pruning knockouts in the same way as other shrub roses. For spring pruning of most roses, the Houston Garden Book also recommends thinning the small branches out until there are three to five hardy main stems left. It also suggests using directional pruning techniques to encourage a vase-like growth habit. This means cutting canes down just above a bud that is pointing in the direction in which you want the stem of the plant to grow. For more on what that is, and for step-by-step spring pruning directions click here.

For those interested in pruning your knockouts back for the winter, here is a short article on winterizing roses in Southern climates.

I like to use shears like this when I cut my roses:

Photo Source

Shears such as those shown above are easy to get at most hardware stores.

I also recommend wearing some good sturdy gardening gloves to protect your hands and arms from thorns. I have a long pair, specifically made for handling roses and other thorny plants. They have thick leather palms, and they go up to my elbows. I have even used these while handling bougainvilleas, which have thorns up to an inch long, and also while playing with a visiting cat who dropped by while I was planting my roses, and they have protected me well against thorns, claws and teeth. :) I could not find any at the larger home and garden centers where I live (Lowe's, Home Depot). I ended up going to a local nursery.


Here is a post with links to more information on winterizing your roses.

Read my other posts on Double Knockout roses.