This situation occurs in the leaves of the Chinese rose
This is a very detailed introduction to the small experience of plant cultivation concerning the occurrence of this situation in the leaves of the Chinese rose. The following is an introduction for you in detail.
Autumn is the peak growing season for Chinese roses. To make them bloom well, it is necessary to ensure sufficient fertilizer and water, which requires regular fertilization. However, fertilization also requires a proper degree. If this degree is not mastered, Chinese roses can easily have problems. Let's take a look at two pictures below.
Both of these pictures were provided by gardening enthusiasts. The first picture shows that the leaves of the Chinese rose have obvious block-shaped discoloration and scorching. In the second picture, the leaves of the Chinese rose also show block-shaped yellowing and scorching.
Although there is a slight difference in color, the essential cause of these two Chinese roses is the same.
I have received many similar consultations, and I usually ask: Have you sprayed anything?
Why ask this question? Because this symptom is usually caused by burns. The reason for these burns is generally the spraying of water-soluble fertilizers or drugs at too high a concentration, which causes leaf burns. Of course, besides spraying fertilizers and drugs, spraying water at noon can also easily cause burns.
So, how can we prevent the occurrence of burns?
Firstly, let's talk about how to avoid leaf fertilizer damage. When spraying foliar fertilizers, pay attention to the concentration of the fertilizer. In the case of healthy growth of Chinese rose seedlings, the concentration of the fertilizer can be according to the recommended concentration.
Generally, the recommended concentration of water-soluble fertilizers is around 1000 times. To be on the safe side, it can be mixed into a solution of 1200 times for spraying.
This situation occurs in the leaves of the Chinese rose
If it is nutrient solution, the general concentration ratio is between 300-500 times. However, different brands have different concentration ratios, so the Green Plant Enthusiast Network suggests that you must read the instructions and strictly follow the mixing ratio.
Also, the Green Plant Enthusiast Network wants to remind that for新手 gardeners, we should stick to using basic fertilizers and not use unconventional methods, such as spraying soy sauce, beer, or oil...
Besides foliar fertilizer damage, drugs can also easily cause burns. Especially for Chinese roses, which are prone to diseases and pests, they need to be sprayed frequently with pesticides. If the concentration of the drugs is carelessly mixed, it can easily cause drug damage and result in leaf burns.
Different drugs have different concentration ratios and frequencies of use, which will be explained in detail in the Chinese rose series courses on the Green Plant Enthusiast Network. Today, I will just give a brief overview.
Many pesticide concentration ratios are calculated in mu (Chinese unit of area). So, how do we convert? If you are good at arithmetic, you can convert it yourself. The Green Plant Enthusiast Network doesn't know how to calculate, but our training camp's first-term monitor once said that he asked someone else, and the water usage for one mu of land is about 45 liters, so you can use this ratio to make a simple conversion.
In conclusion, the Green Plant Enthusiast Network wants to reiterate that at high temperatures, you should never spray water on Chinese roses at noon. Under the sun, accumulated water on the leaves can easily cause burns.
More practical experience and techniques on cultivating Chinese roses can be found on the public account: Green Plant Enthusiast Network Garden (ilanyao).
The above introduction (Green Plant Enthusiast Network) about this situation in the leaves of the Chinese rose, please first check if you have made these three mistakes. I hope it is helpful to you!