Rust, like mildew and powdery mildew, is one of the most common fungi in plants grown in gardens and orchards.
It can occur specifically in the aerial area of plants such as fruits, stems, leaves and flowers. The main cause is moisture or excess water.
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This disease is caused by two fungi: Puccinia and Melampsora and generally occurs in shrubs, trees, vegetables, vegetables and fruit trees. It is usually distinguished by the presence of brown or reddish lumps on the underside of the leaves , while, in the beam of the same, that is, on the face that is facing the sky, it has yellowish spots and leaves with faded portions.
What plants are affected by rust?
Azaleas, carnations, dahlias, begonias, chrysanthemums and ficus, among other plants, are usually affected by rust, especially when grown in greenhouses or winter gardens with a high degree of humidity in the environment.
In some plants the attack can occur on the stems, causing a kind of pustules or yellowish or yellowish scabs that, in much more severe cases, can cause their death.
How to treat and prevent rust?
If you want to reduce the risks of infection, the ideal is not to place the plants too many together, but rather, distribute them in ventilated sites.
On the other hand, if you perceive the symptoms of rust you will have to burn the infected leaves, stems and branches to prevent the spread of this fungus and perform a treatment with a protective fungicide that prevents it from progressing and invading the leaves that are not found affected.
You can even use an ecological treatment based on wormwood, horsetail, neem or neem oil, garlic, onion, chamomile, etc.
You should also avoid sprinkler irrigation systems, because they wet the leaves excessively and can cause adequate conditions for the development of rust, as well as having good drainage to avoid the warm, humid and stagnant environment.
Are there several types of rust?
Yes, there are indeed many kinds of rust that are usually classified according to their color: brown, black, orange or yellowish. These propagate as well commented previously on trees, shrubs, vegetables, fruit trees and ornamental plants, being the rose bush, its main victim.
It is important to make it clear that the damaged parts of the plant with rust cannot be recovered and, therefore, it is essential to remain attentive to the first symptoms.
At PlanetaGarden’s store we have a fungicide and bactericide in the form of a wettable powder called Sanagricola WP , which is made up of copper oxychloride and is used to combat rust and other types of fungi such as Mildiu.