Damage of cacti by diseases and wreckers often happens the investigation of adverse conditions of cultivation. Because of too high temperature, insufficient supply with fresh air or light and surplus of fertilizers of plant become coddled and subject to illnesses.
- Chemical medicines for fight against insects, fungicides, the fresh soil, the acidified water for watering.
1. Often cacti should be saved from wreckers. The most widespread - nematodes (appear from behind excessive dampness), web tick (breeds at high temperature and dryness of air), panel board plant louse (most often strikes listopodobny cacti), mealy scale (settles colonies in inaccessible, secluded places on subauriform cacti) and root scale (quickly damages roots why cacti become pale and perish). Besides, sheet plant louse, fruit komarik (stsiarida), wood lice, naked slugs and even ants can attack cacti. Generally activity of insects is noticeable, and it is recommended to struggle with wreckers by means of chemical means. It is important to check whether medicine affects only insects and their larvae or eggs of wreckers. To avoid possible accustoming of insects to chemical means, it is not necessary to use the same medicine constantly, it is worth changing them periodically.
2. Cacti are subject to fungal diseases (wet decay, spots, etc.). At the first symptoms of similar illnesses the application of special means - fungicides is effective. Prevention of fungal diseases is in to allowing high air humidity indoors.
3. Viral diseases of cacti are not treated. It is better to destroy plants on which slightly profound transparent spots which do not have clear boundary and gradually extending from edges to the middle were shown.
4. It is the simplest to save cacti from not parasitic illnesses. At initial stages of oprobkoveniye, burns, reddenings, subsidence of kidneys and the nedrazvitiya of buds is the best of all to replace cactus in other substrate and to begin to acidify water for watering.