In the hot summer, roses are always the most worrying ones. Black spots, bare stems, yellow leaves, and black stems are all here. If I hadn’t been thinking about the beauty of roses when they bloom in spring, I would have really wanted to throw them all away. , I believe many flower friends have this idea, so what can be done to avoid these problems and keep rose flowers in a relatively healthy state in summer? At least collect fewer pots.
htmlApril Summer Rose Maintenance and Management Key Points
The maintenance and management of rose flowers in summer mainly include four aspects of work. One is the prevention and control of pests and diseases, which must be prevented and controlled since April; the second is watering, which must be done in summer. It is necessary to ensure that there is sufficient water, but no water accumulation. This is still a bit of a test. The third point is shading, and the fourth point is fertilization management. Below, Lan Yao will analyze and introduce it one by one.
1. Pest and disease control
Rose is called a medicine jar, so medicine cannot be stopped from spring to winter before dormancy. Regarding the prevention and control of rose diseases and pests, Lan Yao has written many articles and introduced them. You can read the historical articles. Or refer to the introduction in the book "How to Raise Explosive Roses from Scratch" to do targeted comprehensive prevention and control according to different seasons. Today Lan Yao focuses on the following three points.
2. Summer watering management
Watering roses in summer is very particular. First of all, the watering time is very particular. Try to water in the morning and evening to avoid watering in the hot weather at noon. Moreover, different seedling conditions require different amounts of watering.
For example, strong seedlings consume water quickly and need more watering in summer. It is better to keep the pot soil moist. However, if they are weak seedlings or rose seedlings that are already bare, their transpiration is weak and they consume less water. At this time, watering should be based on the dryness and humidity of the pot soil. Let the pot soil be slightly drier, which is more conducive to the growth of the root system.
3. Shade is light management
Rose flowers like the sun very much and are strong positive flowers, so theoretically there is no need for shading in summer. However, many times we will find that roses grow better in the shade in summer. Why is this?
If the rose is planted on the ground, there is no need for shade in summer. Sufficient light will make the rose grow stronger, but if it is a potted rose, the situation will be different.
Because of the potted roses, in the summer, the flower pots are often very hot in the sun, and the temperature of the pot soil is very high. The root system of the rose is easily damaged in this high temperature environment. After the root system is damaged, the rose seedlings will Various problems will appear, such as yellowing leaves and fallen leaves, stiff seedlings, withered new shoots, etc.
Therefore, Lan Yao feels that there is no need to worry too much about whether roses need shading in summer. If the roses are grown on the ground, ensure sufficient water and there is no need to consider the issue of shading at all. But if it is a potted rose, it is best to shade the pot, or place it directly in a place with half sunlight in the morning for maintenance.
A common method for shading flower pots in summer is to cover the pots, but for flower lovers with many potted plants, this is more difficult to achieve. You can also wrap the flower pots with sunscreen foam to block the heat. Or use foam boards, cardboard, etc. to shade the flower pots. In short, try every means to prevent the flower pots from being exposed to the sun and prevent the temperature of the pot soil from being too high, so that the rose roots have a relatively comfortable environment, and the roses can maintain better health. state.
4. Fertilization management
If we fail to shade the flowerpots in the summer, the root system of the rose will be in a hot environment, which will often cause absorption disorders or directly cause damage to the root system, resulting in yellowing and loss of rose leaves. Green, a deficiency disorder occurs.
Therefore, the management of fertilizer and water for potted roses is very important in summer, because the pot soil temperature of potted roses is often very high. At this time, you must be very careful when applying quick-acting fertilizers. A single high concentration of fertilizer can easily cause black stems. , and poor root absorption can easily lead to iron deficiency, leading to weak seedling growth.
Therefore, when topdressing roses in summer, the first task is to correct the yellow leaves caused by iron deficiency. This iron deficiency is caused by root absorption problems. If you still use ferrous sulfate to irrigate the roots, not only will the iron supplement effect be slow, but it may also cause black stems. The problem. Therefore, when supplementing iron fertilizer , it is necessary to spray the leaf surface with chelated iron and supplement it through leaf surface absorption to quickly correct yellow leaves.
In addition to supplementing chelated iron, it is recommended to use a rooting agent. This is because the root system is not good, resulting in poor absorption and decreased rose vitality. If you can use a rooting agent to promote the growth of new roots, even if there is partial root damage, A lot of new roots will immediately grow to replenish them, and the rose can maintain a relatively healthy growth state and maintain vitality.
As long as you can keep the vitality of roses in summer and survive the two months of heat, you can enjoy the beautiful autumn flowers in autumn.
This article is originally shared by Blue Demon Garden. In my official account: Lanyao Garden (ilanyao), I have collected thousands of articles on flower gardening experience to help you avoid flower gardening pitfalls!
