Can Chinese roses be fertilized in the midsummer?
About the topic of whether Chinese roses can be fertilized in the midsummer, the following article introduces to netizens by the editor.
It's the hottest season of the year, the Sanfu days. In such a hot season, can we apply top dressing to Chinese roses? Many rose enthusiasts are tangled with this issue. Today, I will give you a detailed analysis of how to fertilize Chinese roses in summer.
Can Chinese roses be fertilized in the midsummer?
About this question, we need to look at it categorically. First, we divide Chinese roses into two major categories: climbing roses and shrub roses. The shrub roses mentioned here include all varieties except for the climbing ones, which is a broad concept.
Climbing roses do not hibernate in summer; they continue to grow and constantly burst new shoots. Therefore, for climbing roses, it is necessary to continue fertilizing in summer. With sufficient fertilizer and water, the new shoots of climbing roses will be stronger, and with enough new shoots, they will bloom profusely the following spring.
Shrub roses, on the other hand, are mostly potted and have limited growth space. Most importantly, when the sun shines in the summer, the temperature of the potting soil increases, and the roots of shrub roses are often in a very hot and stuffy environment, making it easy for the roots to get damaged, showing symptoms like weak growth, yellow leaves, falling leaves, and withered branches. Climbing roses, because they are mostly planted in the ground or in large pots, the root environment in the summer is relatively cooler and will not weaken the plant growth due to root damage.
So, whether to fertilize shrub roses in summer is quite controversial. Some people think that fertilizing is necessary because roses are still growing slowly, while others believe it should not be fertilized as it can easily cause black stems. Actually, both sides have valid points.
1 -- Slow-growing or stagnant Chinese roses --
Each variety of Chinese roses has different heat tolerance, and due to the differences in the care environment of rose enthusiasts, some roses may grow slowly or even stop growing after entering summer. For these roses, it is recommended to stop fertilizing in summer and only water with clean water to safely survive the summer.
If the roots are dampened due to excessive watering or if the roots are damaged due to exposure without shading, the roses show unhealthy signs. In such cases, it is also recommended to stop fertilizing because the roots are already damaged, and applying more fertilizer can easily cause black stems, which would be beyond salvation.
Therefore, for unhealthy, slow-growing, or non-growing potted roses, it is recommended to stop fertilizing in summer and provide shading for the pots, or directly shade from 10 a.m. to 3 p.m., creating a relatively cooler environment, which is more conducive to the recovery of the rose roots.
2 -- Healthy and continuously growing Chinese roses --
Some varieties of Chinese roses have good heat tolerance or are well cared for, with early preparations for sun protection and cooling for the pots, resulting in well-protected roots and healthy leaves, continuously producing new shoots. For such potted roses, it is recommended to continue applying top dressing.
Because such roses do not hibernate and continue to grow and bloom, they will continuously consume nutrients. If they do not receive nutrient supplementation for a long time, the plant growth will weaken, so continuous top dressing is the correct choice. However, it should be noted that the concentration of water-soluble fertilizers should be diluted more in summer.
For example, the original concentration of Huaduo No. 1 is 1000 times, but in summer, it should be diluted to 1500-2000 times. If the concentration is too high, even growing roses can easily develop black stems due to fertilizer damage.
Since the watering frequency is relatively high in summer, the fertilizing frequency should also be increased. For example, if watered once a day, it is recommended to apply fertilizer water every other day to keep the roses growing vigorously.
In fact, whether Chinese roses can grow well in summer largely depends on our protection of their roots and the prevention and control of thrips, which are very rampant in summer. If regular prevention and control are not maintained, it will severely affect the growth of new shoots of Chinese roses, leading to僵苗 (stunted growth).
The above[] introduces whether Chinese roses can be fertilized in the midsummer and whether they can be fertilized in summer for these two situations. Have green plant enthusiasts understood this?