Alarm in the garden: Rosenblatttrollwespe threatens your plants!

Alarm in the garden: Rosenblatttrollwespe threatens your plants!

Deutschland - From May it will be time for hobby gardeners again to observe the rose stocks more intensively, because the rose blade trolley wasp (Blennocampa Phyllocolpa) heralded the season. This only 3 to 4 mm small, black wasp lays its eggs on the underside of the leaves. The result is often rolled -up leaves that are reminiscent of cigars. As soon as the larvae hatch, they reach a size of 8 to 9 mm and are first whitish before they turn light green.

The larvae not only cause holes, but also skeleton feeding through their food inside the leaf tubes. In the event of severe infestation, the leaves can even occur to yellow and fall off prematurely. In addition to the aesthetic damage, the pests also have a weakening of the plants, which can affect the recovery of the roses. Therefore, it is advisable to pick up infested leaves early and to dispose of the residual waste to prevent spreading instead of throwing them on the compost, such as Ruhr24 reported.

life cycle and preventive measures

The life cycle of the rose blade trolley wasp is remarkable. The egg laying takes place in late spring, between the end of April and early June, and larval development runs into midsummer, i.e. July or August. After this phase, the larvae leave the leaves to hibernate in a cocoon in the ground. In the following spring, between May and June, the pupation takes place. In order to prevent infestation, experts recommend strengthening roses through optimal nutrient supply and adequate irrigation. Regular fertilization with rose fertilizers is also advised to make the plants more resistant. Thorough soil processing in winter and spring also helps to combat the hibernating dolls. These preventive measures are essential to avoid greater damage, as Gartenjournal illustrated.

In addition, some gardeners promote the natural predators of the rose blade trolley wasp by creating a species -rich garden. If beneficials such as ladybugs and lacewings come into the garden, they can act as a natural regulation of the pests. The promotion of ecological balance is a long -lasting strategy for minimizing pest infestation.

control and control

Regular control of the rose plants is essential for control. Particular attention should be paid to rolled -up leaves. Interested leaves should be documented in writing, carefully removed and disposed of in the residual waste, since the composting of the material can promote the spread of the pests. This handling is recommended by Idealgarten , which also indicates the benefit of biodegradable sprays such as neem oil.

Overall, dealing with the rose leaf troll was a challenge for gardeners. However, the preservation of the beautiful rose plants can be guaranteed through extensive knowledge of the pest and the correct care and control strategies.