What is black spot and why is it so dangerous?
Plants in the garden are not only exposed to pest attacks, but can also be infected with diseases. The most common ones are those that spread very quickly across many plants. Mushroom spores are carried by the wind and infect other plants in the garden. Fungal diseases are favored by moisture and heat. It is in such conditions that they spread most rapidly. Black spot is . It is caused by the fungus Diplocarpon rosae.
Black spot is characterized by black spots appearing on the leaves. A characteristic feature of black spot is yellow borders around the black spots. Infected leaves crack and fall. The disease weakens the entire bush and leads to its death. Black spot thrives in warm and moist environments. Its source may be old, rotten leaves lying on the ground. Gardeners indicate that regular removal of old leaves and inflorescences is necessary to maintain healthy bushes.
A neighbor who is a gardener recommended that I spray for black spot at home. Removes fungal spores
it is a disease that must be fought. If it has not yet infected the entire bush, natural sprays will help. To combat black spot, spraying with copper is recommended. It helps both in the fight against the disease itself and has a preventive effect. The Polish Rose Society recommends that the cuprate concentration be 0.3%, i.e. 30g per 10 liters of water. A gardener friend of mine showed me that baking soda is also effective in fighting fungal diseases. It is famous for its fungicidal properties and is additionally safe for plants. Simply mix 1 tablespoon of baking soda in 1 liter of water and spray the rose bush thoroughly. No places should be missed, the spray should be applied from the top to the bottom. Don’t forget about the inside of the leaves. Spray with baking soda once a week until you notice that the disease is receding.
If the disease is very advanced, home remedies may not be enough and you need to use more advanced methods. Fungicides are recommended to combat black spot, including preparations containing tebuconazole. It is a fungicide that is absorbed into the plants and inside protects against attacks of fungal diseases.
