Most of us have found out over the years with growing roses that it can be quite tricky to over-winter them successfully in our harsh winters. Hopefully, by following these simple procedures, you will have a much improved survival rate to look forward to come spring.
Since mulching is a key factor to improving survival success rates, we are going to take a look at several different methods that you can apply as soon as the temperature permits.
The mulching procedure shown below is normally done on any rose that is grafted. These roses include hybrid tea, floribunda, grandiflora and some shrub types. Soil covers the graft region, which is down at the base of the rose, which is then followed by adding a few layers of leaves and some evergreen boughs to hold everything in place. Wood mulch can also be used in place of the soil. This should be applied right before a hard frost is predicted to occur. A rose cone can be added over the top for added protection in extreme climates. Make sure that after covered, your roses are kept frozen and not too warm under all that insulation. Freezing and thawing could be incredibly harmful if not fatal.
Shown in the next two illustrations is a tree rose on the left, and a climbing rose on the right. Tree roses need to be completely buried to cover the graft region found near the top where the branches meet the stem. Climbers need to be taken down, wrapped together and mounded to ensure proper protection for the winter months. Other then keeping a light layer of mulch around the base of the plant, make sure to remove all other material in mid-spring and hopefully you will uncover a successfully over-wintered rose bush!
– Jessica, Perennial Manager