Content
Peony leaves are the most important component of its lovely appearance. The flower attracts little pests, but there are a huge number of diseases that affect its tops. The article describes what to do if the peony leaves become stained and what the possible reasons for this may be.
Why do brown or black spots appear on peonies?
Many people have probably noticed black spots on peony leaves that appeared in September. The probable reasons for this could be a number of diseases, which should be eliminated as soon as possible so as not to lose the seedling. Below are diseases of plant foliage and discuss in detail various methods of combating them.
Gray rot
Gray rot is one of the most dangerous diseases for peonies; it can appear suddenly and cover the entire plant.
In most cases it leads to withering of the seedling. Brown spots covered with mold appear on damaged leaves.The optimal conditions under which the disease actively appears are wet weather, flooding of the root system with melt water, sudden temperature changes and dense plantings.
The peony leaf becomes covered with gray rot for the following reasons:
- insufficient root ventilation and excess moisture;
- oversaturation with nitrogen baits;
- spreading fungal spores.
If brown spots appear, it is recommended to cut off and eliminate the diseased area of the peony leaf, and treat the plant with a manganese solution or copper sulfate. In addition, the top layer of soil should be cleaned and replaced with fresh one. For preventive purposes, one should not neglect various methods of combating aphids and ants, since they are the first carriers of spores.
Rust
The main symptom of rust is the appearance of red or brown spots on the sheet.
If the symptoms are not noticed in time, the seedling may become completely covered with pigmentation. Affected leaves begin to curl and dry quickly, and the entire plant loses its attractiveness. As soon as it is noticed that the peony is covered with red spots, the deformed sections of the leaf need to be collected and burned. This will prevent the appearance of spores on neighboring specimens. Having discovered the appearance of rust on a peony leaf, the first step is to spray it with one percent Bordeaux mixture. Preventive measures include fertilizers of the phosphorus-potassium group.
Septoria
Septoria brown spots appear from bottom to top of the plant, and without proper treatment the leaves will fall off
The fungus affects not only the greens, but also the stem. Yellow-brown round or oblong spots appear on the inside and outside. As they progress, they merge.The color of the damage becomes brownish-gray.
Standard Fundazol, HOM and Bordeaux mixture are effective in combating the disease. The plant is sprayed three times per season.
Root rot
Root rot often appears in peonies. One of the most popular reasons is dividing the plant using unsanitized tools. There is also a natural origin - acidity and soil moisture.
If the peony foliage turns brown, begins to darken, spots appear, the stems become limp, you need to get to the roots. Most often you can see rot appearing on the rhizomes.
Any anti-rot remedy is suitable for the fight. And for an ideal result, you should transplant the plant to another place, and the peony will be reborn.
Phyllosticosis
Phyllosticosis appears in the form of brown or brown spots on the leaf surface
In the advanced stage, the leaves dry out and the plant dies.
To save the peony from such spots, it is advised to immediately remove all diseased areas of the leaf, then treat the Tiram flowerbed with a 0.6% solution, and spray the entire plant with fungicides.
Leaf spot
Leaf spot appears on all above-ground parts of the peony.
The disease is spread by insects moving nearby and dirty garden tools. You can notice how pronounced brown spots gradually appear over the entire surface of the leaf.
At the moment, there is no remedy that will one hundred percent guarantee victory over this virus. It is necessary to remove the diseased bush before it infects others and spots appear on them.
Cladosporiosis (brown spot) of peonies
When infected, the leaf curls and becomes deformed.First, light brown spots appear and spread. A gray coating appears on the lower surface.
This time the same fungicidal drugs will help. Under no circumstances should you delay treatment. Pre-clean problem areas of the peony.
Powdery mildew
Heat and humidity are considered favorable conditions for the appearance of powdery mildew.
Very often its main distributor is the wind.
The main indicator is the presence of white coating on the leaves, and sometimes spots with the same coating. First of all, it affects the lower leaves, gradually expanding the affected areas.
Having seen something wrong, you immediately need to cut off and throw away the diseased areas of the peony, and then use a solution of copper sulfate or soda ash. Repeat the procedure in a week. Peony will regain strength and will no longer be plagued by spots and all sorts of ailments.
Why did dark spots appear on peony leaves after flowering?
A blooming peony delights with the grace of its forms and the luxury of its inflorescences, but when it fades, brown spots often appear, which can be caused by:
- Fungal infection is incredibly active in warm environments with high humidity.
- Nutrient deficiency - iron, potassium, phosphorus and nitrogen, when deficient, lead to the death of the flower.
- Water stagnation. Fungus develops on constantly wet roots.
- Improper care sometimes causes stress and injury with increasing stains.
Lack of fertilizers, little light, and improper watering are the main reasons for the appearance of defects on peony foliage.
How and with what to treat black spots on peony leaves
If you notice such symptoms, you should not panic. By approaching wisely, you can easily normalize the general condition of the plant.
The first thing is to identify the reason why the peony leaves have turned black. If a fungus is diagnosed, then fungicides are used. If the problem is an insufficient amount of useful microelements, pay attention to its nutrition.
Do not forget about the condition of the soil, avoiding waterlogging. Periodically check the soil for moisture, water only when necessary. You can give your favorite peonies optimal conditions for their development and growth. They love the sun and feeding within the limits of their needs.
Prevention measures
A peony may never develop diseases at all if they are prevented.
Increased acidity and excess nitrogen, heavy soil and thickened planting affect the development of plant complications. Therefore, the soil mass must be deoxidized and loosened periodically. Add sand to the clay mixture.
Sometimes dried buds lead to bewilderment, since the peony was not sick at all. And this is just unacceptable care. A weakened plant will bring with it much more worries than the prevention of painful conditions.
Conclusion
If the peony leaves become stained, you need to find out what caused this phenomenon. Brown spots indicate fungi, natural aging, high levels of moisture and required substances. It will be possible to solve the problem that has arisen by using appropriate means and providing the most effective conditions. Fertilizing the plant should not be ignored.
