For the orchids with blackened roots

I think people who raise orchids have met orchids bought back. It will neither grow nor die for a year and a half. It doesn't sprout at all. Some sprouts are not long, or do not grow up, some Orchid friends will say it is Lan Gong. It's really nothing. According to my opinion and conclusion, orchids in your first-hand cultivation, improper management, fat damage. Drug damage, or when the plant is too dry, suddenly irrigate the root tip damage caused by excessive concentration of water and fertilizer, which hinders the normal absorption and conduction of orchids. I have encountered this situation. I bought a global tree with three seedlings the year before last. After a year of training last year. He will not die. It does not sprout. I went to the basin to have a look at it this year. Any root is fine. All the root tips are black. There is no absorbent root at all. Even close to the Reed head difficult to come out of a few centimeters of the root tip is also black. The whole root is stiff. There is no elasticity. Completely lost the function of absorbing and preaching nutrients. In this case, I use soaking: first, I gently clean up the orchid and put it in a basin or bucket with running water. If there is an oxygen pump for goldfish, it is better to increase oxygen. Soak the whole orchid in it for 24 or 48 hours and pick it up. Dry so that no clear water can be seen. Use fresh plant material to plant and pour root water. It is very effective, and the global tree that has been treated in this way has sprouted 3 buds and is still very strong this year. I have my own opinion on this method. I hope it can be used for reference to Lanyou.