What about the rotten roots of Cymbidium? it is a plant that can remain evergreen all the year round.
Cymbidium is a kind of plant that can keep evergreen all the year round, which is very suitable for indoor culture. Cymbidium is an axial growing orchid. When choosing a flowerpot, you need to choose a long tube-shaped pot. And the culture environment must be well ventilated, and charcoal should be added to the bottom of the flowerpot to facilitate drainage. The main purpose of this is to prevent the roots of Cymbidium from rotting. Because poor drainage or poor ventilation will lead to the root rot of Cymbidium, if the root of Cymbidium is half rotten, then Cymbidium can basically be judged to be finished. Here's what we should do if we encounter the rotten roots of Cymbidium.
What about the rotten roots of Cymbidium
1. Cut off the rotten parts
Pour out the cymbidium and leave it in a cool, dry and ventilated place for one or two days. All the rotten roots that have blackened will be cut off, and the plants that lean against the rotten roots will be removed, leaving no hidden trouble. Be sure to water less, and less when watering nutrition and rooting water. In case it happens again.
2. Strictly disinfect orchid plants and plant materials.
Soak the orchid plant in 1 ‰ potassium permanganate solution for 2 hours, rinse with clean water, and dry in the sun for 2 hours. The new plant materials I use are: catalpa bark 50%, broken brick particles 20%, honeycomb cinder 20%, rotten pine needle 10%. After washing the first three kinds of clean water, soak and disinfect them with boiling water. Pine needles are exposed to the sun and sprayed with 2% topiramate solution for disinfection.
3. Switch to mud basin cultivation.
Cymbidium with rotten roots should not only have a certain degree of humidity, but also not be too wet. This requires good permeability. I chose two mud basins. In order to increase the air flow, I enlarged the water seepage hole at the bottom of the basin and put several long wooden strips on the bottom of the basin to increase the air permeability. Plant the sterilized Cymbidium in a basin, spread a layer of bark of 2-3 cm in diameter and broken bricks the size of walnut at the bottom, fill the middle with a medium-sized plant mixture, and top with the smallest one.
4. Daily management
After watering the roots of Cymbidium, Cymbidium was cured in low light for more than 10 days, sprayed twice a day, and placed on the south windowsill after half a month. About 1 month later, the plant grew new roots, and 3 months later, purplish red new buds grew on the pseudobulbs. It is not allowed to apply fertilizer before growing new roots, and only light fertilizer can be applied after growing new roots and new buds. 1-2 ‰ compound fertilizer is added to the water for raising goldfish.
In summer, the high temperature put a shallow plastic pot under Cymbidium, which filled with water, increased humidity, sprayed around the flowerpot every morning, middle and evening, and opened windows for ventilation to make it through the summer smoothly. When carbendazim or topiramate was sprayed every half a month, there were almost no diseases and insect pests.
In November, two fat flower buds grew on the pseudobulbs of the newborn seedlings closest to the windowsill. At this time, phosphate fertilizer was added every 10 days, and foliar buds were sprayed with 2 ‰ potassium dihydrogen phosphate, and all the new leaf buds were removed to concentrate nutrients on the growth of flower buds.
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