Black spot defoliated roses

From July to present yourself places roses without leaves. Behind this lies the problem mostly black spot. Of this fungal disease in addition to the Hybrid teas and the increasingly popular shrub roses and climbing roses are affected.

At first the typical ground-leaves, dark to black, star-shaped spots appear on the leaf surface. In the course of the disease, the leaves turn yellow and fall off, stick commended the roses until midsummer. Leafless plants have little chance of new blooms, the shoots can not form a timber and not mature, resulting in a decreased frost resistance with the result.

The black spot on roses is affected much from summer to save any more. Prevention is appropriate. Since the fungus in stems, but also in the fallen leaves overwintered, infected leaves should be removed continuously, clippings removed and disposed of in the organic waste container. Moisture conditions, overhead irrigation and watering in the evening help spread the fungus. The leaves remain wet longer than 7 hours, the spores germinate the black spot. Free state, ie, a planting distance further accelerate the drying of the foliage.

In a new planting in the choice of varieties resistant roses should be preferred. Tested and proven rose varieties with the "ADR" - predicate suffer little or less of the annoying fungal diseases as unaudited. However, even roses without examination in certain regions have proven to be reliable. The practitioners from a nursery near you, you can usually do well.

optimum planting preparation is the basis for healthy rose growth. It appears important that the location is sunny and airy, because the leaves after dew or rain dries quickly. Although the rose tolerates clay soil, but it should be water permeable. By an admixture of gravel in the subsoil, the water withdrawal must be guaranteed. The top soil can be enriched with rotted compost.

In extreme cases, a control with pesticides is not excluded. Here are commercially approved to receive funds. Follow the instructions and application instructions!