Rolled leaves on roses

As beautiful as roses are, cultivating them is not easy. The right location and good care are important. Despite everything, there are numerous diseases and pests that threaten garden favorites. Rolled leaves on roses indicate the rose petal wasp. Fortunately, there is only one generation of them each year. The wasps are for the roses

and their larvae are not harmful. It's just a visual flaw.

Rose petal wasp

The rose petal wasp (Blennocampa pusilla) attacks both wild roses and cultivated rose varieties. Some climbing roses are particularly vulnerable.
Damage - the rose petals are rolled tubularly around the central panicle from the edge.
Causes -

inside the roll are about 5 to 10 mm long, initially white, later light green larvae with a brown head. These ensure that the assimilation capacity of the leaves is greatly reduced. It comes to stunted growth. If the larvae of the rose wasp are heavily infested, the leaves can turn yellow and fall off.
Prevention - you can't prevent unless you remove all of the roses from the garden. Otherwise you can only regularly check for infestation. Infested leaves should be cut off and destroyed before the larvae leave. They do not belong on the compost, as pupation can take place there too.
Control - tillage in winter or early spring combats the overwintering pupae in the soil. Treatment with pesticides against the larvae shows little success. Protected in their leaf roll, the larvae are well protected. It is best to remove the infected leaves.
In the case of severe infestation, treatment with pest-free Careo concentrate or Bayer Garten Kombi-Rose-Pest-Free is recommended.