
Rosal
How to recognize and combat black spot on roses
Black Spot On Rose Bush
Fungus
Type:
Risk to the plant:
INTERMEDIATE
Diplocarpon Rosae / Marssonina Rossae
Pathogen:

Micosis/Hongos
WHO CAUSES IT?
Rose Black Spot, caused by the fungus Diplocarpon rosae, is a common disease that affects rose bushes around the world. This pathogen can cause significant damage to ornamental plants, especially under conditions of high humidity and heat.
SYMPTOMS
In rose bushes, Black Spot appears as black to dark brown lesions on the leaves, accompanied by a yellow edge. These lesions usually have an irregular appearance and can merge, affecting a large part of the leaf surface. Additionally, the disease can weaken the plant and reduce its ability to produce flowers.



DEVELOPMENT CONDITIONS
Temperature:
22°C - 28°C
Humidity:
70% - 85%
HOW IS IT SPREAD?
Direct contact with fungal spores, wind spread, and human transportation of infected plant material.
HOW TO ELIMINATE IT?
Home treatments
There are no home treatments
Natural allies
Chemical treatments
There are no treatments for this disease. Treatments are directed at the insect vectors that transmit it. See insect treatments.
RECOMMENDED PRODUCTS TO ELIMINATE THE PEST
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REPELLENT PLANTS
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RECOMMENDATIONS
















































