How much joy we brought in the cold of winter a little pot of blooming violets. Its pale lilac or pale pink flower of the sun shines warm on our large frosted window. And as we live, when suddenly flower turns brown and rots. There are two main diseases: fusarium and gray rot. And both of them in one way or another connected with the soil, that is, with the substrate, where the violets grow. In cold weather, when there is excessive watering of flowers, we suddenly notice that the petioles of violets begin to grow brown and fall off. You can see the dark, decaying roots, easily separating from the soil. So there is a fusarium. Agent of this disease - fungi of the genera Fusarium and vertitsillium that from the soil penetrate the young roots and affect the conducting vessels of the roots, stems, petioles, stems. Fungi secrete special substances are toxins that cause browning and rotting. When careless irrigation, especially in contact with water droplets on the leaves and petals, they begin to rapidly grow brown and rot appears. Gradually, parts of the dead appears fluffy smoke-gray powder, patches are increasing rapidly, covering more and more leaves, petioles and even the growing point, causing a complete decay and death of plants from other diseases - gray mold or botrytis. The causative agent is a mushroom of the genus Botrytis, together with plant residues can enter the soil and permanently infect new plants. So if you perpetuate violet leaf or simply re-pot it, then pay special attention to the soil. In any soil can be mycelium (spawn) and fungal spores, pathogens, from which so affected the flowers. Promptly remove all brownish stalks and leaves and be sure to dispose of the soil with decayed plant. Prevention of these diseases is the same: the late autumn and winter avoid excessive watering. Moist environment, variations in daily temperatures and the lack of light are the conditions for the development of pathogens, mold and plant diseases. In winter, flowers set in plastic containers that are placed at the bottom of sphagnum moss, absorbent. Within a few days after watering the moisture evaporates around the plant and is supported by high humidity. The flowers must be watered when the surface of soil in the pot is a bit dry to the touch.
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