Diseases of houseplants Kalanchoe appear due to violation of the rules of its content. For the flower, the temperature regime and humidity in the room are very important, any deviations in one direction or the other contribute to the appearance of unwanted growths on the plant. If the humidity of the air is too high, then the leaves will rot. If the plant begins to stretch upwards, it means that it does not have enough light and it is necessary to rearrange the pot to another place.
The main problem of the Kalanchoe plant is the falling leaves of the plant in stuffy rooms and in wet weather. This problem can easily be solved by ventilation.
If the soil is very wet, the roots of the indoor plant can be rotted.
There is also the problem of leaf spotting. It is necessary to arrange pots from each other. Stains can appear from too bright sun.
If the Kalanchoe does not bloom, then you need to do the following: cover the pot with a light-tight cloth, remove it only for 5-7 hours a day, rest the time to keep the plant in the dark. Kalanchoe will soon blossom.
If the temperature is very low, cork spots may appear on the leaves, and the leaves can grow together. When waterlogged, the leaves sag and crack.
In a place where the stems begin to branch, there may be necrotic spots of brown color. This is the manifestation of late blight of Kalanchoe. The pathogen will remain in the soil, which is infected with plant remains. Late phytophthora occurs due to various factors that disrupt the normal growth of plant tissues. This, for example, large watering, very high temperature, excess nitrogen in the soil and poor ventilation. Also, the disease can occur when there is a large difference in air and soil temperatures (6-8 degrees).
On the aerial parts, sometimes there are wetting spots, which are covered with a dense gray coating. This is the appearance of the gray rot of Kalanchoe. Next, the spots begin to spread over the plant, turn into a mushy mass, if the lesion is strong - the plant will rot. The pathogen remains in the affected soil for 1-2 years. It can spread with contaminated soil, when the diseased plant contacts a healthy one, through the air, along with water. The disease actively begins to develop with increased air humidity, waterlogging the plant, poor ventilation, poor lighting.
On the leaves there may appear spots of white color with a powdery mushroom coating. Leaves die with further development of the disease of the plant. This disease is called powdery dew of Kalanchoe. The fungus remains in the remains of the plant, it can be transmitted through the air. The disease develops quickly enough if the humidity of the air is low and the temperature of the content is high. This is due to the fact that the plant has a broken leaf turgor, because of which they are more susceptible to the action of the pathogen. With all the rules of care for Kalanchoe, the disease does not cause great damage.
Kalanchoe rarely infects pests, sometimes aphids (a small insect of green, gray or black color) appear. It sits on the underside of the leaf of the plant and feeds on its juice, which in turn leads to the fact that the leaf dries up and shrinks.