If there are black spots on the leaves of a rose, what should I do?

The process of growing roses is impossible without obstacles. The most common plant disease is spotting. The disease is very dangerous for the flower, as it leads to its death. When spotting appears on roses, you should immediately start to fight it.

How to avoid spotting on roses?

Black spots on roses not only spoil the aesthetic appearance of the flower, but also bring a lot of harm to the plant. Gradually, the disease spreads throughout the bush and can affect the nearest ones. The disease is insidious and difficult to cure. The best remedy is to prevent black spots on roses.

How to prevent the onset of the disease:

• regularly carry out correct pruning of plant stems, as "cutting" increases the resistance of roses;
• remove damaged leaves, buds, flower stems and be sure to burn them in an area far from the bush;
• constant weeding of the root area;
• during the rainy season, sprinkling the soil around the bush with ash has a beneficial effect;
• treatment of the plant with special means of protection for roses;
• spraying the bushes with infusion of mullein or horsetail;
• the correct selection of a site for planting roses: do not plant in darkened and thickened areas;
• frequent cleaning of instruments with disinfectants.

It is also important to know that there are rose varieties that are more resistant to black spot. Some, on the contrary, are genetically predisposed to it. Therefore, when purchasing planting material, this must be taken into account.

How and how to treat spots on rose leaves?

Currently, in specialized stores there is a huge selection of drugs that can cure spotting. The main thing is to buy not one product, but several.

Special preparations should contain:

• triazole;
• mancozeb.

They will need to be used alternately for the effectiveness of the action. For the first seven days, rose bushes are sprayed with preparations that include mancozeb. For example: "Gold" or "Profit". A week later, they begin to use products containing triazole, such as Topaz or Skor.

It is necessary to process the bushes in the evening so that there is no presence of dew. Before disinfection, it is worth watering the plant under the root system. After the spots on the leaves of the rose disappear, you need to carefully examine the flower. With repeated symptoms of the disease, it is worth removing the damaged areas of the plant and burning them.

Preventive remedies

On the leaves of the rose, black spots begin to appear only at the end of summer, and the plant is damaged at the beginning. Often, the disease attacks the flower if it is weakened or does not receive the required dose of nutrients. Therefore, it is important to fertilize the roses.

How to spot black spot:

1. firstly, the plant stops growing;
2. secondly, dark spots appear on greenery (like pads);
3. thirdly, yellowness is visible around the leaves.

Some experienced gardeners use environmentally friendly disease control methods. The area where roses are grown is surrounded by plantings garlic... This vegetable has the ability to prevent fungal diseases (black spot belongs to the genus Marssonina rosae).

Also, for prevention purposes, you can spray the bushes with decoctions of garlic or tobacco. The infusions are not addictive to the infectious agent and do not harm the plant.

Correct care

It is very important to regularly prune roses.This process will strengthen the plant's immune system against fungal diseases, which include black spot.

Also, if black spots have already appeared on the leaves of the rose, then it is worth cutting off the shoots at the level of 2-3 buds from the base. Then spray the bushes with chemical agents ("Copper Oxychloride", "Vectra", "Cumulus").

It is better to remove all weak, old and dry branches, because they will become the target of black spot damage.

In autumn and spring, it is necessary to process the stems with copper sulfate and Bordeaux liquid.

All damaged leaves dry quickly, then fall off. They must be collected and burned. Otherwise, the fungus will overwinter, and in spring it will spread to healthy rose bushes.

During the growing season, the plant needs free access to fresh air; do not plant other crops too close. Do not allow long-term presence of moisture on the leaves of roses. To do this, you need to cut the shoots and weed the weeds. It is better to dig up the surrounding area regularly, add a fungicide (disinfectant) to the soil.

The spread of the disease is facilitated by temperature drops and high humidity. But not only environmental conditions can lead to the defeat of the rose with black spot, but also improper agricultural technology. Therefore, before you start growing these flowers, you need to ask how to properly care for them.

Disease black spot on roses (video)