Black spots on rose leaves: how to treat a dangerous disease

First Grower ignores pair of dark spots on the leaves of roses. A week later, angrily notices that the problem is increasing in scale, and has been a good half of the bush like a "God knows what." If you continue to hope for the best, the leaves begin to turn yellow and curl up, bringing the death long ago fragrant roses ...

Sad scenario? 🥀

It should treat the favorite flower as soon as notice signs of disease. The publication you will read about a black spot - the second in popularity rose after disease hated by all growers mildew. How to distinguish the disease from other problems the plant from infection generally took on a bed and, of course, the cure was sick "Garden Queen".

Know the enemy in the face

Blackspot - an infectious disease of roses. Spots, disfiguring the leaves are due to vigorous activity fungus Marssonina rosae. The spores overwinter and waiting in the wings in the fallen leaves and the upper layer of the earth, ready at a convenient moment to attack barbed sacrifice. From bush to bush spread in droplets of water during rain or watering.

Fungus is easier to build up a colony on the weakened, diseased plants. For show will stress the importance of proper care for roses and more capricious in this paragraph will not stop! It only black spot of roses will go to the publication.

Like all fungi, indecent, Marssonina rosae looks into the gardens, even the most caring owners. Moisture and heat - ideal conditions for aggressive behavior. Therefore, the peak of the black spot of roses is in the middle of summer, when the weather accelerates the growth of a parasitic organism.

Looks like black spot on rose leaves

Dark spots begin to appear on the lower leaves, 7-10 days and grabbing the top part of the plant. Sometimes the fungus is able to hit and trunks of young shoots.

On the leaves grow dark spots in the form of a "blot" with blurred edges. The fungus grows - spot increases and sometimes merges with the adjacent ones. At the final stage of mature spores of the fungus, as evidenced by the black crust. Sick Rose leaf waiting unenviable fate: it turns brown, wither and fall to the ground together with the fungus.

Without the help of the gardener Marssonina rosae, hiding in the ground, will attack again and again. Would threaten the entire rosary blackspot - a highly contagious disease.

It harms the rose and even endangers its existence, because:

• Leaves - a full and important part of the plant. Their surface moisture evaporates and is involved in photosynthesis, which is essential for normal development. It is clear that the loss of a large part of the green mass rose to turn serious problems.
• Realizing the loss of bush in a hurry to fill it: begins to actively build new leaves and shoots. And summer is coming to an end, and soon rose on the laws of nature must begin to prepare for winter... Because this plant is not asleep, "how to" become a victim of frost.

It is not necessary to tempt fate - it is better to undertake the processing.

Than to treat black spot in the individual rosaries and important notes

The first step is to cut a rose bush all diseased leaves and collect litter from the ground. After all, we remember that there lives a parasite Marssonina rosae, ready to re-infect your favorite flower is the use of processing will come to naught. "Prey" better to burn or carry from the garden to a safe distance.

There are 3 options roses treatment of black spot:

1. "Light version". In the Internet somehow strongly advised to process "fitosporin" and means containing copper (can not remember Bordeaux mixture). But it is "feeble" options. I would say that they are more suitable for prevention.

Can help and at the initial stage of a black spot when the affected leaves can be counted on the fingers. The copper-containing preparations are used strictly according to instructions, so that the ground is not accumulated too much copper.

2. "Medium". In the course of going any fungicide to help the black spot:

• "Previkur";
• "Topaz";
• "Ridomil Gold"
• "Speed" and others.

Using, of course, again, with strict observance of instructions regulations.

3. "Extra" - helps 99%, even in advanced cases. Driving podsmotrena online rosebook.ru, and these guys are experts in the treatment of roses:

Effectively alternating spray formulations containing mancozeb (Profit, Ridomil Gold) and triazole (Topaz, Atk) week intervals (alternated no more than three times).

Note ✔

Whatever the drug to treat their roses you choose, it is necessary to process repeat 3-5 times at intervals of instructions to the facility. It is useful to change the drugs with different active ingredients to the fungus does not produce immunity.

Even if after the first blemishes treatment ceased to appear, it does not mean that a parasitic fungus defeated. It can continue its march through the bushes, lull the owner's garden.

Another important point - it is necessary to handle not only the bush. The fungus does not leave the flower bed, if it remains in the soil. Rose sprayed, and the land around it - shed. So blackspot will be defeated! I wish you all a beautiful and healthy roses 🌹 It was interesting? Click "Thumbs up" in response!