Hydrangea leaves: diseases
Hydrangea is an ornamental crop with large leaves and beautiful inflorescences. Popular with florists and landscape designers, used in floristry. But the flower is very sensitive to diseases and pests. The hydrangea leaves are the first to suffer, it is from them that the onset of the disease can be detected.
Causes of hydrangea leaf disease
Hydrangea can be exposed to all kinds of viral, pest and bacterial attacks, which threaten not only to spoil the appearance of the shrubs, but also lead to the death of the culture.
Hydrangea leaves can indicate disease and the presence of parasites.
The leaves are a kind of first signal of a malfunction – they turn yellow and cease to be uniform. In order to save the planting, you need to figure out why it got sick. The main reasons may be:
- Improper maintenance and soil problems at the planting site.
- Fungus, nutrient and fertilizer deficiencies.
- Parasites.
As a result, diseases such as chlorosis, gray rot, and septoria arise. It is important to recognize the nature of the disease in time and get rid of its source.
Chlorosis is the most famous ailment, from which the leaves of the hydrangea instantly dry up, and the flowers gradually grind. Branches can become brittle and dry. Reasons: irrigation with inappropriate water, lack of iron, an excess of organic fertilizers and lime in the soil. To get rid of the problem, hydrangea is subjected to repeated processing of nitrogenous potassium and fertilized with complexes with iron content.
Hydrangea needs watering with settled water at room temperature
Gray rot is a fungus that affects the structure of the tissues of the bush. Absolutely all parts of the plant suffer, and ignoring the disease leads to death. If you notice gray bloom and wet spots on the leaves, start treatment immediately. Remove all damaged parts and treat the flower with foundation or Bordeaux liquid.
Septoria is manifested by brown spots and gradual leaf fall. It is treated in the same way as gray rot.
If hydrangea diseases are not detected in time, then you will have to immediately dig up and burn the plant
There is also a threat from aphids and spider mites. Both parasites damage the leaves, causing them to dry out and fall off. Experts recommend getting rid of the spider pest by spraying with a solution of thiophos, and from aphids with anabisin sulfate.
Any change in the appearance of a flowering plant is a signal that the plant needs help. Be attentive to your garden, properly care for the plantings, do not ignore their diseases, and they, in turn, will delight you with their beauty.