What kind of fertilizer is good for Chinese roses in summer?
Let me share with everyone whether it is necessary to fertilize Chinese roses in summer and some small experiences in green plant maintenance on how to fertilize Chinese roses in summer. Next, the editor will introduce.
Why does a Chinese rose develop black stems when fertilized in summer? Can Chinese roses continue to be fertilized in summer? What kind of fertilizer should be used? Recently, many flower friends have asked this question, so today I will analyze for you "how to fertilize Chinese roses in summer."
Do Chinese roses need to be fertilized in summer?
Different varieties of Chinese roses have different growth habits in summer. For climbing roses, summer is their peak growing season, requiring a large amount of water and fertilizer. Therefore, we also need to continue to apply top dressing in the summer. With sufficient water and fertilizer, the suckers of climbing roses will grow stronger, and there will be more flowers in the following spring.
For shrub roses, most varieties do not have good heat resistance. In the heat of summer, they often enter a semi-dormant state, slowing down their growth or even stopping.
However, there are some shrub roses that are heat-resistant and continue to grow in summer. So for shrub roses, whether to continue top dressing in summer depends on their growth.
If Chinese roses grow slowly in summer or show signs of stunted growth, it's time to stop top dressing. For varieties that maintain vigorous growth, it is recommended to maintain a certain frequency of top dressing.
What kind of fertilizer is good for Chinese roses in summer?
Many flower friends are纠结 about what kind of fertilizer to use for Chinese roses in the summer. Some say that using fermented organic fertilizer and slow-release fertilizer can easily cause fertilizer damage, while others say that using water-soluble fertilizer can easily cause black stems. What kind of fertilizer is safer?
First of all, you need to understand that at the beginning of summer, around June, Chinese roses are still in a period of vigorous growth. By July and August, when the weather is too hot and the temperature is above 35 degrees, some Chinese roses will gradually enter a stage of growth stagnation.
In early spring, after the first bloom of Chinese roses, around May, we apply a large amount of fermented organic fertilizer and controlled-release fertilizer and maintain the frequency of applying water-soluble fertilizer until after the second bloom, which is the end of June and July.
By this time, the weather is getting hotter, and whether to continue applying water-soluble fertilizer after pruning the second bloom depends on the growth of the Chinese roses. The long-acting fermented organic fertilizer and controlled-release fertilizer have already been used at the beginning of May and are still within the efficacy period, so there is no need to apply them again after the second bloom.
By now, you should know what kind of fertilizer to use for Chinese roses in the summer. Since organic fertilizer and controlled-release fertilizer were applied in May, and the duration of efficacy is about three months, there is no need to apply fermented organic fertilizer and controlled-release fertilizer again throughout the midsummer season until the end of August when autumn pruning is done, and then it can be replenished again.
Do you need to continue using water-soluble fertilizer after the second bloom of Chinese roses?
For vigorous climbing roses, top dressing should also be maintained in the summer. It is recommended to apply a compound fertilizer with nitrogen, phosphorus, and potassium every 15 days, followed by watering. Sufficient fertilizer and water can maintain the vigorous growth of climbing roses and result in more blooms the following year.
For potted shrub roses, if they are growing well, it is advisable to apply a general-purpose water-soluble fertilizer every five days. The concentration of the water-soluble fertilizer should be diluted to 1200-1500 times. Chinese roses tend to produce ugly flowers in the midsummer heat, so it is recommended to pinch off the flower buds to focus on branch and leaf growth. The quality of the flowers will be better in the fall.
When top-dressing Chinese roses in the summer, you need to pay attention to three points:
1. Control the concentration of water-soluble fertilizer and apply it frequently.
2. Avoid using high-nitrogen fertilizer.
Using high-nitrogen fertilizer in the summer can easily lead to black stems in Chinese roses.
3. Avoid using slow-release fertilizer in the midsummer.
Slow-release fertilizer can easily cause fertilizer damage in the summer, and the damage is continuous and difficult to rescue.
For Chinese rose varieties that grow slowly or stop growing in the summer, it is recommended to stop top-dressing. If you are not sure whether your Chinese roses can be fertilized, it is advisable to stop using water-soluble fertilizer in the summer and apply a small amount of controlled-release fertilizer around the pot, waiting until after autumn pruning to fertilize again.
The detailed content on whether to fertilize Chinese roses in summer and what kind of fertilizer is good for them in summer has been provided here, hoping it can be helpful to you!