There is often talk of spots on rose petals. These black or red spots appear on both the top and bottom. But these fungi can not only appear on the leaves, the shoots and twigs are not immune either.
The bark burn fungus
The so-called bark burn fungus is a problem for the gardener. That's why you should always check the shoots of your roses. If you find reddish-brown spots, then you have to remove the shoots generously. Here you should cut down to the he althy wood to prevent spreading. You should dispose of the diseased shoots with the household waste and under no circumstances put them in the compost, as they can get back into the ground.
Cover in winter
In order to prevent this fungal attack and to promote the wood ripening, you should cover your roses with pine twigs instead of soil in winter and don't forget to remove the brushwood promptly after the winter. You should also avoid fertilizers with nitrogen in the fall.