Precautions for Watering Edible Mushrooms and Methods for Preventing and Treating Root Rot in Clivia

Root rot in Clivia can occur in all four seasons, but it mostly occurs in summer, mainly caused by the specific environment of high temperature and high humidity and the lack of care knowledge among growers. For example, some people, for the sake of appearance, grow Clivia in ceramic pots, plastic pots, or purple clay pots, which have poor air and water permeability. After watering in summer, because the pots have poor permeability and air circulation is difficult, the roots' respiration is blocked, causing root rot; some, although they plant Clivia in clay pots, are afraid of water shortage and fertilizer shortage in summer, so they water as soon as the surface soil of the pot looks dry (when in fact the soil in the pot is still moist), and they often apply concentrated fertilizer. When root respiration is suffocated, concentrated fertilizer burns the roots, and in addition certain harmful bacteria multiply rapidly in summer, root rot is caused.

For Clivia, whether in the vegetative growth stage (from seedling stage to before flowering) or the reproductive growth stage (after flowering begins), its suitable growth temperature is 5-25°C. Generally, when growing Clivia at home, due to the lack of necessary equipment and conditions, one should proceed from the actual situation. In the hot and humid summer, in addition to taking measures such as shading, ventilation, and cooling, one should, from the perspective of controlling its growth (keeping the plant in a dormant or semi-dormant state, which will be beneficial to its growth and development in other seasons), strengthen root care in summer. The methods are: first, use clay pots for growing Clivia; second, do not fertilize in summer or apply only a small amount of dilute liquid fertilizer; third, control watering in summer, and insist on never watering until the soil is completely dry. To prevent excessive water in summer from suffocating the roots, you can use a large wooden box filled with moist sawdust and bury the flower pot in it (do not water inside the pot), then check frequently, and when the sawdust is dry, spray water to replenish it.

If root rot occurs accidentally, rescue it quickly. That is, first knock the Clivia with root rot out of the pot, remove the soil, cut off the rotted roots, wash the roots with clean water, then apply a potassium permanganate aqueous solution to the rotted root areas, then wrap all the leaves with white paper, exposing the roots, with the roots facing the sun, and sun them in sunlight for half an hour, using ultraviolet rays to kill pathogens. After the above treatment, if only a few roots of the diseased plant have rotted, it can be planted directly into sterilized nutrient soil, watered less for the first half month, and growth can recover in one and a half months; if more than half or all of the roots of the diseased plant have rotted, it should be planted in a pot filled with fine sand and placed in a shady and cool place to sprout new roots. After about two months, when new roots have grown, replace the nutrient soil, and then normal management can be carried out.