Common types of flower diseases

Common types of flower diseases

Plant disease types can be roughly divided into four categories: fungal diseases, bacterial diseases, viral diseases, and physiological diseases.

Fungal diseases

Fungal diseases account for the largest proportion of diseases. The vegetative body of fungi is mainly hyphae, which grow inside and outside the plant. When it grows to a certain stage, it will produce spores to continue to reproduce. Fungal diseases are mostly caused by humid environments, and mold and powdery substances will grow on the host's tissues. Fungal diseases manifest themselves externally through symptoms such as rotting and discoloration, tissue necrosis, wilting and deformity, and ulceration and damping off.

Bacterial diseases

Bacterial diseases

The proportion of plants infected by bacterial diseases is small, most of them suffer from acute necrosis. The external manifestations of bacterial diseases are spots and ulcers at the site of disease occurrence, and water stains, oil stains, and bacterial pus on the lesions.

Viral diseases

Viral diseases are mainly caused by viral invasion and infection, which harm a wide variety of flower plants. Viral pathogens manifest themselves from the outside as discoloration, spots, ring patterns, and bright veins on the plants. Symptoms include clumping, dwarfing, deformity and necrosis. The virus is mainly transmitted by being inhaled into plants through the mouthparts of various insects.

Physiological diseases

Physiological diseases are mostly caused by adverse environments, such as high temperatures, low temperatures, or lack of nutrition, and other external reasons, which manifest themselves on the outside of flowers as leaf fall. Fruit falling, yellowing of branches and leaves, etc.