I found that the orchid has rotten roots, what do I need to do?

First cut off the rotten roots, clean them up, then disinfect them with potassium permanganate or carbendazim, disinfect the orchids, put them in a cool and ventilated place to dry the roots naturally, and finally change the potting soil for planting.

It is not difficult to find empty root orchids in time, and new roots can grow by wrapping the roots with moss, and waiting for the new roots to grow to about 10 cm on the pot for routine management.

Rotten roots are mostly caused by more water, water accumulation of planting material, poor air permeability of planting materials, rotten root orchids to see the reed, if the reed head is fresh and vigorous, there is salvation, and the reed head has been rotten and blackened is basically hopeless.

Rotten root orchids should be pruned with necrotic roots, and if they are left, they will rot in the pot and affect the formation of new roots. The rotten roots have more or less some germs, so this orchid needs to be disinfected and sterilized on the pot, and it can be soaked for 5 minutes with carbendazim + methyl tobuzin mixed solution, and then dried in the shade for half a day. Use clean planting material for potting (don't use old pots), keep the humidity of planting material in "moist", and raise it in the semi-shade for two months, and you can generally produce new roots.

At this time, we must dig it up, then disinfect its roots, dry it and then transplant it into other pots.

Insufficient light: Different species of orchids require different light hours, but basically they must ensure more than 4 hours. If there is insufficient light or dim light, the photosynthesis of the orchid plant is weak, and the potting soil is not easy to dry, and the water will stay for a long time, affecting the growth of the roots.

Unventilated or too ventilated: not ventilated, the maintenance environment is too stuffy, watering is not easy to dry, and the transpiration of the plant is also weakened; If there is too much ventilation, the water in the pot will be dried quickly, and if it is not replenished in time, the water stored in the roots will slowly run out and gradually dry out.

Lack of humidity: Orchids prefer a relatively humid environment, and the roots also need a relatively stable temperature and humidity, if it is too hot or too dry, it will cause the orchid to rot its roots.

Therefore, improve the environment and ensure the appropriate humidity, if the roots have been rotten and the growth state is not good, most of them are because the environment is too dry, especially in summer, which is caused by insufficient humidity, so we must pay attention to the control of ventilation, light and humidity.

The time and method of watering will change with the dryness and wetness of the potting soil and the temperature of the four seasons, and different watering methods can be selected to ensure that the potting soil is not too dry or too wet.

So in the summer, it is best to water at night, and by the next day the water will drip and the potting soil will not be too wet. Secondly, the growth of the plant should be observed in watering, and if the growth is not good, change the watering method and watering amount in time. In addition, if the temperature is too low (below 10) or too high (above 30), do not water, otherwise the orchid plant will rot its roots due to frostbite or steaming.

Orchids are fleshy roots, and the roots store a lot of water in them, and there is no way to absorb high concentrations of fertilizer, especially when the roots have wounds, the roots will suffer from fertilizer damage, resulting in root rot. Therefore, when fertilizing, it is necessary to apply thin fertilizer frequently. In addition, when using fermented organic fertilizer or long-acting fertilizer, do not get too close to the roots to avoid root rot.

When orchid plants are threatened by pests and diseases, they will cause root rot, and in this case, everyone will often only pay attention to the prevention and control of pests and diseases, and ignore the existence of root rot. Insecticide is key, but it is also necessary to check whether the roots are rotten and depot them in time.

After the orchid rots roots, it needs to be removed from the potting soil immediately, and then use sterilized scissors to cut off all the rotten roots of the plant, and then spray disinfectant on the roots of the orchid to avoid its decay, and finally the orchid can be transplanted again into loose and breathable soil, and the frequency of watering should be controlled to prevent the orchid from rotting roots again.

1. Pruning

When cultivating orchids, if you find that the root system of the plant is rotten, you should immediately depot it, and then prepare a pair of sharp scissors that have been sterilized to cut off all the rotten roots of the plant, and there can be no residue, so as not to worsen the situation, and spray carbendazim on the roots of the orchid for disinfection.

2. Re-transplant

When retransplanting orchids, you need to place them in a ventilated semi-shaded place first, wait for the root wounds of the plant to heal, and then plant the orchid into the soil, and it is best to use a mixed cultivation substrate of sand, wood chips, coconut peat soil and vermiculite, which has good air permeability and drainage, which is conducive to the growth of orchids.

3. Watering management

Orchids like water, but not tolerant to waterlogging, when breeding orchids, if watering too often, it will lead to rotten roots, need to control the frequency of watering, you can water once every other week, and when the ambient temperature is lower than 5 degrees, you need to postpone watering, so that the soil remains dry, maintain the normal growth of orchids.

4. Maintenance method

When maintaining orchids, it is necessary to place the plants in a place of scattered light to avoid direct sunlight, and in the summer period, the orchids need to be moved to a cool environment with ventilation and ventilation to avoid suffocation, and in the winter period, the orchids should be placed indoors at a temperature higher than 10 degrees Celsius to allow them to grow healthily.

When the roots of the orchid are rotten, they can be removed from the soil, then the rotten roots and stumps are cut off, then disinfected with carbendazim solution, and then replanted in loose, fertile and well-drained soil. When watering orchids, it is necessary to grasp the principle of "seeing dry and wet", so as to prevent the plant from rotting roots again.

1. Pruning and disinfection

When the roots of the orchid are seriously rotten, it will lead to the death of the plant, so in this case, the plant needs to be taken out of the soil in time, and then the rotten root stump is cut clean, and then the orchid root is soaked and disinfected with carbendazim solution for a while, and the root system can be dried in a cool place before it can be replanted.

2. Replant

To replant orchids, you need to choose a loose, fertile and well-drained soil substrate, and do not use too sticky soil, otherwise it is easy to cause root rot in the orchid. The soil needs to be exposed to the sun before it can be used so that the treated orchids can be replanted.

3. Maintenance management

Replanted orchids need to do a good job of maintenance and management, so as to prevent orchids from rotting roots again, watering needs to master the principle of "see dry and wet", can not let the soil produce waterlogged, fertilizer can not be applied too much concentration of fertilizer, can not use raw fertilizer, otherwise it is easy to burn the roots of the plant.

In fact, orchids like a moist environment, but the fleshy roots of orchids are afraid of waterlogging, so it is easy to rot roots if they are too wet or rainy, leading to many diseases. So how can you prevent orchid root rot?

Orchids (details).

In winter, orchids are in the dormant or slow growth stage, and the potting soil should be dry; Spring and early summer are important periods for the growth of orchid peanut roots, and the potting soil should be moist. However, long-term overhumidity is also easy to cause root rot, causing leaves to wither and even die. Because of excessive water, the soil is waterlogged and the air permeability is poor, resulting in insufficient oxygen, hindering the respiration of the roots, and causing the roots to turn black and rot. During the rainy season or rainstorm, the orchid must avoid its harm, because of the long rain and humidity, black spots are most likely to occur on the new leaves, and the stamens often have "rotten clothes", which affects flowering and ornamentation.

However, if the potting soil is too dry, it is easy to dry up the pseudobulb or other tissues to lose water and affect the metabolism, which will also lead to weak tissues and poor plant growth. In autumn, the potting soil should be wet, so as to facilitate the removal of leaves and flowers in the coming year. Therefore, orchid growers should know the trick of "not getting wet in winter and not dry in autumn".

The above illustrates the different water requirements of orchids at different times, so the amount of watering should be strictly controlled according to the requirements. At the same time, improper fertilization of orchids is also easy to cause root rot, such as too much fertilizer, too concentrated or liquid fertilizer into the leaf sheath, will have an adverse effect on orchid flowers. When fertilizing, the amount of fertilizer should also be increased or decreased according to the amount of watering, so that it can grow in harmony.