What to do when the orchid leaves turn yellow and the roots rot
For many girls, how to deal with the yellowing and rotting of orchid leaves and understanding the methods for treating rotten roots in green plants and flowers, please refer to the detailed introduction below.
In the living environment of orchids, factors such as light, temperature, water, air, soil fertility, and organisms constantly affect the growth and development of orchids. When these factors are favorable for orchids, they may bloom every year. If these factors have an adverse effect, it is also difficult to see the orchid plants bloom. Poor environment also increases the likelihood of orchid diseases. So what are the common problems with orchids?
From the perspective of the orchid's own flower variety, the orchid's fleshy roots are not tolerant to soil with high humidity; the roots of orchids are prone to waterlogging and fertilizer accumulation, which not only prevents ventilation but also easily causes diseases and pests; most of the leaves of orchids are interlaced, which is not conducive to ventilation and light, and these factors together cause the orchid to easily have problems.
Problem 1: Yellow leaves due to lack of nitrogen, phosphorus, and potassium
Every orchid enthusiast knows that nitrogen, phosphorus, and potassium are the most needed elements for plant growth and are the three most important elements in various fertilizers. Lack of nitrogen will weaken the breathing efficiency of orchids, and the growth will also slow down; lack of phosphorus will cause orchids to sprout late, slow down growth, and the fleshy roots will stop growing. From the outside, the leaves of orchids will turn dark green and slightly curl. If phosphorus deficiency is severe, it can even lead to plant death. Lack of potassium will result in the orchid leaves turning yellow.
If your orchid has the above conditions, you need to carefully observe whether there is a lack of nutrient elements. After confirmation, it is easy to remedy, just apply the corresponding fertilizer to solve the problem. Note that fertilizing should be done with thin and frequent applications; applying too much at once can burn the roots, which would be a loss.
What to do when the orchid leaves turn yellow and the roots rot
Problem 2: Physiological rotting of buds
Physiological rotting of buds, which is the common situation in daily life where new buds gradually change color until they rot. If your orchid has this situation without other pests invasion, you need to pay attention to watering and fertilizing.
Many orchid enthusiasts consider watering with rainwater as a圣经, but when watering with rainwater, make sure not to let a large amount of rainwater accumulate around the orchid roots for a long time, and ventilate promptly after watering. The same goes for fertilizing; you must apply a little less and divide it into several applications, then enhance ventilation after fertilizing to fundamentally prevent the occurrence of physiological rotting of buds.
Problem 3: Rotting of orchid roots
Also, excluding the invasion of external pathogens, if your orchid's roots begin to rot slowly, the leaves start to turn yellow and wither, and you find that the soil has been consistently very moist, then 80% of the time it is due to excessive watering, poor plant drainage, causing water and fertilizer or medicine solution damage, leading to the roots rotting slowly.
In this case, it is recommended not to keep the diseased plant, as rotting can breed many bacteria. If these bacteria do not spread to nearby flowers, it would be fortunate. After removing the diseased plant, apply a diluted 1000-2000 times solution of chloramphenicol to nearby flowers, and spray once every other day to prevent nearby flowers from becoming infected.
Problem 4: Rotting of leaf tips
Some orchid enthusiasts have orchids with only the leaf tips rotting, while the rest of the plant is normal. This is mainly due to external factors or poor ventilation in the soil, causing poor root respiration and nutrients unable to be transported smoothly to the leaf tips. If you encounter this situation, be careful not to touch the leaf tips when repotting or planting, and ensure good drainage and ventilation after planting.