Powdery mildew is a rather unpleasant disease caused by parasite fungi. It affects a large number of plants: vegetables, many cereals, indoor and decorative flowers. Violet is also subject to him. To conduct effective treatment, it is necessary to establish the nature of its occurrence.
Signs of powdery mildew on a violet
Defining this disease is quite easy. At first, on the leaves and stalk, you can see spots of a pale color, it seems that they were sprinkled with flour. This is where the name came from. These are spores of the fungus, consisting of numerous, collected in chains of conidia, which cannot be removed. The appearance of the plant becomes untidy and dirty. Without treatment, the spots increase and turn into ulcers. In the future, the flower stops growing, the leaves die off, and the plant dies. It is possible to cure it, but it is better to prevent the disease. If you comply with the conditions of detention (temperature, humidity, watering, etc.), then there will be no reason for infection.
There are two types of this disease.
Downy and powdery mildew
The plant is covered with brown, red and brownish spots. They can be seen on the top of the leaf, and a whitish coating will be visible on the bottom. Then the leaves will begin to fade, darken and fall off. Violet will die in two months. This is a manifestation of downy mildew. It occurs with high humidity and sharp temperature fluctuations.
If the plant is covered with thin cobwebs or whitish specks of dust that cannot be removed, then this is powdery mildew. The spores of the fungus settle on the leaves, on other parts of the flower and inside the soil. The leaves will not fade, but will begin to dry out and crumble. The plant dies faster - after 3 weeks.
Both types of disease are dangerous for violets.
How to cure powdery mildew on a violet
Ill plants are treated using ready-made medicines. It is enough to process them with violet once. To consolidate the achieved success, the procedure is repeated after 1-1.5 weeks.
In addition to processing, you must perform some more sequence of actions:
- Detach infected plants. Carefully remove all affected parts (leaves, stems, flowers). Cut off the remaining color so that the plant does not spend energy on flowering.
- Rinse the violet under running water, being careful not to get into the middle of the flower.
- Clean and treat the outside of the pot and its pan with disinfectants.
- Change the topsoil in the tank to a new one.
- Treat the entire flower and soil with the prepared drug solution.
- Repeat spraying.
To get a greater effect from the treatment, different means are used for primary and repeated spraying.
Folk ways of struggle
You can treat them with ready-made chemical preparations or alternative methods, of which quite a lot is known. They have a good effect. If you do not fight the disease, then the violet will die quickly.
Means | Cooking | Application / Spraying |
| Sodium carbonate (technical soda) | Combine with liquid soap 25 and 5 g per half a bucket of water. | Plant and topsoil with a frequency of 1-1.5 weeks. |
| Blue vitriol | 5 g per 1 cup. This solution is gradually poured, constantly stirring, into another composition: 50 g of soap per half a bucket of warm liquid. | The whole flower twice, after a week. |
| Dry mustard | 30 g is stirred in a warm bucket of water. Cool down. | Additionally also watered. |
| Garlic | 50 g per 2 l (cold). Stand for a day, then filter. | The whole violet. |
| Milk serum | Mixed with water in a ratio of 1:10. | Apply three times every 3 days. Good to use for prevention. |
| Fresh Field Horsetail | 100 g per 1 liter leave for the whole day. Then boil for 2 hours. For use, dilute in a ratio of 1: 5. | 3-4 times in 5 days. |
| Iodine solution | 5 drops per glass of liquid. | The whole plant. |
Fungicides to control powdery mildew on violets
The use of chemicals is a more effective means. They are sprayed abundantly so that the liquid drains from the leaves.
Agent / active substance | Cooking | Application |
| Bayleton / triadimephone 250g / kg | Solution: 1 g per 1 liter of water. | Spray the whole plant. The remains are poured into the ground. The effect lasts for 2-3 weeks. Noticeable result on day 5. |
| Topaz / Penconazole 100g / L | 1 ampoule (2 ml) per 5 l. The concentration is increased with severe damage. | They process leaves from two sides. Can be repeated after 2 weeks. The most effective remedy. |
| Fundazole / benomyl | 20 g of powder per 1 liter. | Affects all parts of the flower. Greater effectiveness is achieved through root absorption. |
Mr. Summer resident informs: how to prevent the appearance of powdery mildew on violets
It’s easier to prevent a disease than to treat it later. Preventive measures consist of compliance with the following rules for keeping violets:
- maintain the desired temperature + 21 ... +23 ° С;
- water regularly, avoiding waterlogging;
- feed with complex fertilizers containing K and P, do not use nitrogen during flowering;
- aerate the room, providing access to fresh air;
- avoid being exposed to sunlight for more than 2 hours a day;
- wipe the leaves with a solution prepared from laundry soap every 2 weeks;
- break off the bottom so that oxygen gets into the ground;
- carry out an annual transplant;
- quarantine newly acquired violets;
- spray 2 times a year with Topaz solution;
- daily inspect plants; diseased - isolate;
- to disinfect the earth, pots, tools;
- Do not put cut flowers next to potted ones.
