Post-Flowering Management of Chinese Rose: Focus on These Two Things
Today's sharing: Post-flowering management of Chinese rose involves doing these two things well, knowledge about flowers. Next, the site editor will introduce to netizens.
Previously, I shared some tips on pruning Chinese roses after flowering. In fact, it's not that there's nothing to do after pruning. In fact, the real management is just beginning.
Post-Flowering Disease and Pest Control for Chinese Rose
After the first batch of spring flowers of Chinese rose, it can be said that the rose has put in all its efforts, using up all the nutrients accumulated from the previous winter to spring. Therefore, at this time, the rose plant is actually quite weak.
Now is also the peak season for red spiders, black spot disease, and various small caterpillars. Especially red spiders and black spot disease can cause significant damage to Chinese roses, and they are also difficult to control. Prevention is always better than cure.
Therefore, after the Chinese rose flowers, when the plant's energy has not yet recovered, it is essential to spray pesticides promptly to prevent various diseases and pests from attacking, helping the rose to safely pass through this sensitive period.
This time, it is recommended to use a combination of multiple pesticides for comprehensive control. If you don't want to deal with many bottles, you can use the rose care kit shown in the picture, which contains three types of medicine: pyraclostrobin for black spot disease and powdery mildew, abamectin for red spider treatment, and thiamethoxam·lambda-cyhalothrin for killing various pests.
One kit can handle the prevention and control of common diseases and pests of Chinese roses, worry-free.
Post-Flowering Formal Fertilization Method for Chinese Rose
Just preventing diseases and pests is not enough. We also need to help the rose recover its strength as soon as possible. Because 35 days later, the second batch of roses will bloom. At this time, it is essential to replenish the rose's body and carry out a formal fertilization.
Chinese roses should undergo at least four formal fertilizations a year. For detailed introduction, you can refer to the book "How to Bloom Chinese Roses from Scratch" or continue to follow the articles.
So how should this formal fertilization be done?
1. Choose the Right Fertilizer
Firstly, choose the right fertilizer. This time, we need to supplement the Chinese rose with sufficient long-acting fertilizer. You can choose slow-release fertilizer, controlled-release fertilizer, organic fertilizer, or bio-fertilizer.
The characteristic of these fertilizers is that their nutrient release is slow and the effect lasts long, continuously providing the nutrients needed for rose growth. One thing to note is not to use fast-acting fertilizer as a substitute for long-acting fertilizer.
Fast-acting fertilizers have a short duration of effect, are too strong, and can easily cause burning of seedlings or black stems if the amount is not well controlled. For post-flowering fertilization of Chinese roses, choose Nongbang's long-acting controlled-release fertilizer and bio-fertilizer.
The nutrient release of controlled-release fertilizer is less affected by the environment, and it is not prone to fertilizer damage even when used in summer. In addition to providing the nutrients needed for rose growth, the beneficial microorganisms contained in the bio-fertilizer can activate the soil, keeping the potting soil well-structured, preventing compaction, promoting root growth, and improving plant resistance and reducing diseases and pests, creating a virtuous cycle.
2. Specific Method for Top-Dressing
Before fertilizing, first clean up the weeds, fallen leaves, and残花 on the surface of the potting soil. The decay of these materials may cause fungal infections. It is best to clean up potted roses promptly, while the management of ground-grown roses can be relatively relaxed.
After cleaning the surface of the potting soil, you can use tools like a rake to turn the soil at the edge of the pot inward, turning it onto the roots, making the edge of the pot look like a "groove," as shown in the picture below.
Then sprinkle the prepared long-acting fertilizer around the pot edge. Before applying the fertilizer, check the instructions, for example, this Nongbang controlled-release fertilizer. My bucket is about equivalent to 5 gallons, and the dosage is about 5-8g each time.
Since I am using controlled-release fertilizer and bio-fertilizer simultaneously, the dosage is slightly less, 5g each, evenly sprinkled around the edge of the pot.
Here's a note: many gardening friends experience fertilizer damage because they apply it too close to the roots. Whether it's controlled-release fertilizer or organic fertilizer, it should not be piled directly on the main roots, as it can easily cause black stems. This point should be noted by gardening friends.
After spreading the fertilizer, turn back the soil that was originally turned to the roots to cover the fertilizer, and the top-dressing is considered done.
If you find shallow burial troublesome, you can also apply it directly on the surface of the potting soil, but this may result in some loss of fertilizer efficiency, and shallow burial has a higher utilization rate of fertilizer efficiency. If the rose plant grows more vigorously and it's not easy to shallow bury around the pot edge, you can also use the hole application method, digging 2-3 small holes around the pot and burying the fertilizer in them.
For potted roses, follow the above method for top-dressing. For roses planted in planters or in the ground, the operation can be more daring. The picture below is from a student at the Flower Growing Practice Camp, for your reference.
First, dig a shallow trench 20 cm away from the rose roots and then lay a layer of fertilizer. The practice camp friend used fermented sheep manure organic fertilizer, so a relatively large amount was used, about 300g of sheep manure per plant.
Sheep manure is a fermented organic fertilizer. Generally speaking, the fertilizer effect of chemical fertilizers of the same quality is much higher than that of organic fertilizers. Therefore, the amount of organic fertilizer used is much larger. If using controlled-release fertilizer, you don't need so much.
After placing the fertilizer, cover it with soil, and that's it. By now, you must be wondering, is organic fertilizer better or controlled-release fertilizer? In fact, each has its advantages. Although organic fertilizer is used in large quantities, it is very good for maintaining soil structure. If you are raising indoors, on a balcony, or a rooftop, and want to keep it clean, you can prioritize using controlled-release fertilizer plus bio-fertilizer, which is cleaner and requires less.
The above content is the complete information on the two things to do well in post-flowering management of Chinese roses. Green plant enthusiasts can refer to this aspect for reference.