What are the different diseases of rhododendrons?

There are a number of different diseases of rhododendrons, the most serious is root rot and dieback branches. Other diseases of rhododendron include spots of petals, leaf and leaf spots. The cultivation of these plants according to ideal cultural practices can help prevent most of the diseases and pests of rhododendrons. This is caused by various types of oomycete phytophthora , also known as a water form. Fungicides cannot cure this disease, so it is important to prevent it from being prevented by proper planting. This disease is a problem when the soil has excessive water. It is also important for the soil to turn well. The first feature of this disease is often wilted, with the roots look blackened or wavy. Savlo plant may be possible by emerging it with improved drainage and organic mulch. Under these conditions, resistant varieties are also succumbed. If the soil is improved, rhododendrons may continue to grow at this point.

Another serious disease of rhododendron is the dietback of the branch caused by a fungus called botryosphaeria Dothidea . This disease is first visible on seemingly healthy plants when the dying branches appear. If the bark is scratched with a knife, reddish -brown color occurs on the dying branches.

Dieback is a difficult disease of rhododendron to control. The infected branches should be cut deep below the colored wood and then destroyed. Disinfect the pruning tools between cuts with 10% bleach or 70% alcohol friction and apply a fungicide that contains copper.

Gall is common spring rhododendron diseases, but it is not particularly serious. IT -affected plants have leaves, buds or stems that develop swollen, distorted growth in April or May. Sometimes infected leaves are covered with white spots. This is due to various types of fungus Exobasidium . The inspection lies mainly from the selection of Gall and their destroying.

The leaf score is caused by a group of rhododendrone disease, which consists of different mushrooms. Types septoria , Colletotrichum , phylosticta and cercospora are primarily cosmetic disease. One should remove the leaves that fallen and take care of the leaves to dry the leaves. Severe cases can cause premature drops of leaves and can be treated fungicides.

6ulinia azaleae . This is manifested as spots on flowers that cause rot. It can easily spread from one flower to the other with rain, wind and insects.

This fungus lives in the soil, so the ground cover should be replaced by a mulch that was not contaminated with a drink. Another important measure for treatment and control is to destroy all flowers that show signs of infection. Also avoid watering from above - and just water the plants from below.