Content
- Roses diseases: Prevent in time in early spring
- Mushroom spores often overwinter in the rose foliage
- Insect larvae in the ground make up for it
- Tips
Pests often infest roses in spring
Roses diseases: Prevent in time in early spring
The first signs of disease or of a pest infestation can usually be detected in late spring or even in summer. However, an infection often took place months before, when the rose was still in hibernation. Many pathogens (especially fungi!) As well as insect pests overwinter either on the rose itself or in the surrounding soil area. Hygiene is therefore immensely important, especially after an infection that has been overcome in the previous year, in order to prevent a renewed illness.
Mushroom spores often overwinter in the rose foliage
Star soot and rose rust are among the most common rosacea diseases. Although they can be tackled quite well in good time, they often reappear every year. The reason for this is usually in poor hygiene, because the fungal spores overwinter on the underside of the leaves: they can be seen on closer inspection as small black dots on the underside of the leaves. Therefore, not only the infected rose foliage should be removed, but especially in autumn and winter, the fallen leaves on the ground should be carefully weggeharkt. Do not dispose of this over the compost - this usually develops into a new source of infection - but throw it in the household waste. Cut the roses properly in the spring and strengthen them with herbal tonic. Healthy roses develop their own defenses, with which they can defend themselves.
Insect larvae in the ground make up for it
The larvae of many pest insects, such as the leafy wasp, the rose leaf wasp or the rose celery overwinter in the ground and pupate there over the cold season. In the spring, finally, the slip from the cocoon and the young adult pests lay their eggs again on the rose. To prevent this, in the late winter and early spring, work the soil around the roses thoroughly with a hoe and thus disturb the pupation of the larvae. To completely kill the animals, disinfect the soil with garlic or field horsetail stock.
Tips
For many rosacea diseases, successful treatment depends on diagnosing the infection or infestation as soon as possible and taking the appropriate countermeasures. Otherwise, especially in severe cases remains only the radical pruning of the affected Rose in the hope that this survives the procedure. Therefore, check your roses regularly and carefully from the first sprouts in early spring.