Before we explain the roses autumn-section, we dedicate ourselves once again to the correct cutting position. Where exactly the cut is to be set, can be also recognized as an indispensable basic knowledge that is transferable to other plants. The rose, however, shows us in an incomparable clarity why this is like that.
At first let us have a closer look on a rose stem. As at almost all woody plants we see some small swellings, which we call "eyes" in german. Exclusively at those eyes, new shoots can be formed. Because only there the inner supply lines reach the outside of the bark. So if you cut off below, you cut off this line. But this also means that any remaining stalk residue above, having no more eye, is completely useless and will die.
At any wood it is important to avoid dead branches, as it is the best nesting box for all kinds of plant diseases. But with the right cutting position, you can almost completely avoid this. As you can see in the pictures, the present roses were cut too high above the eyes - this is for us a perfect example to prove our instructions for a proper rose cut photographically !
It can be seen that the cut rose stems has dried to a predetermined position. And that's almost exactly the position where it should have been cut, so that no dead wood would have been produced.
What is also visible is that the cut follows a particular system. Namely that the correct cutting position above the eye is nearly identical to the diameter of the stem!
So you know now an ingenious principle that is applicable to nearly all woody plants. Often is recommended to cut about 0.5cm to 2cm above the eye. This is not wrong - but this statement does not recognize the basic principle. Moreover, there is the statement that it has to be cut at a slightl angle so that rain water can run off. This reasoning one can also forget, because the drops of water don't drip off beecause of its surface tension and adhesion. The real reason is that the supply lines to the eye, of course, have no right angles, but are slightly oblique. With this oblique cut all future dead wood is removed without damaging the pathways. The perfect cut position and angle you can see in the photo with the dried out stem.
Apart from that the growth direction of the single shoot determines the cut. It should be almost perpendicular and minimally inclined to the eye, no matter how obliquely the stem is growing. Finally it should be mentioned that you should use a sharp pruning scissor to get a clean cut, that will not crush the cells. And if you cut roses, which are suffering from a disease, you should disinfect your scissors before you cut a healthy rose. This works well with alcohol, but it is easier to heat blades with a simple lighter.
Garden trick :
Infected plant material has not to be stored in your compost. Germs and spores can survive and later infect healthy plants. It is better to burn this green or putting it in the trash.