What situations can easily cause black stem in Chinese roses
An article about the situations that can easily cause black stem in Chinese roses, and the following is an introduction by the editor.
What situations can easily cause black stem in Chinese roses
Black stem often occurs when cultivating Chinese roses, and it mainly divides into two parts: the top part of the plant and the bottom part. The reasons for these two types of black stems are completely different.
Firstly, if the top branches wither, it is due to disease infection, commonly known as dry branch disease. Especially after pruning Chinese roses, if we do not protect the wounds properly or fail to prevent the spread of pathogens effectively, it is easy to cause the black stem phenomenon in the top branches.
This situation is relatively simple to prevent, as I have shared with everyone before, mainly using the specific fungicide metalaxyl to control root rot and wilt diseases, and then applying it by spraying. However, it is important to ensure that the wounds do not come into contact with water. If black stem appears at the bottom, it is usually caused by excessive fertilization, leading to fertilizer damage.
In such cases, if black stem has already appeared at the bottom, it is basically beyond salvation. Therefore, it is best not to use highly concentrated inorganic fast-acting fertilizers, especially in high temperatures now. Do not mix slow-release fertilizers in the potting soil.
Because slow-release fertilizers decompose very quickly in high temperatures, which can easily cause root burn. It is best to observe and prevent in advance. If you find that some leaves, especially the edges of tender leaves, show signs of browning.
Then it might be due to fertilizer damage. At this point, we must immediately water the potting soil generously or change the pot to prevent the spread of fertilizer damage. If not dealt with promptly, the bottom will turn black. Therefore, the reasons for black stem in Chinese roses differ depending on the location, so prevention during the daily maintenance process is very important.
The related explanations shared above about the situations that can easily cause black stem in Chinese roses hope to bring a little help to your life!