What medicine should be used for the red spider mite on Chinese roses?
The editor will explain the knowledge of using medicine for the red spider mite on Chinese roses. Next, the site editor will introduce to netizens.
What medicine should be used for the red spider mite on Chinese roses? Predatory mite usage method
Flower enthusiasts who often刷 Douyin should have come across it. Recently, there have been two gardening gurus who are arguing with each other. Personally, I am not interested in such mutualBashing incidents. I believe that cultivating flowers is a relaxing and修身养性 activity. If they argue in pursuit of truth, it can be forgiven. But if it's for other purposes, then really...
I personally think that everyone makes mistakes, and sometimes it's really not necessary to be too picky. We're just growing flowers; there's no need to make ourselves so tired, wanting to know everything from astronomy to geography. No matter how accurate the data is, as long as the method shared with flower friends is effective, it's good!
Baidu red spider mite, the information shows that the reproduction speed of red spider mites is greatly affected by temperature, with an average of 10-15 days for a generation. Whether it's the accelerated 3 days or the normal 15 days, it doesn't matter. What's most practical is how to master the timing of spraying the medicine effectively.
Moreover, most flower enthusiasts at home are not running nurseries and it's not possible to have five to seven types of medicines just for a red spider mite. Different red spider mite medicines have different effects on killing the eggs, nymphs, and adults of red spider mites.
Most flower friends only have 1-2 types of miticides, so in this case, we need to combine physical treatment methods to assist in killing red spider mites, and even use the natural enemies of red spider mites to assist in treatment. Detailed introduction will follow later.
For flower friends with a small number of potted plants, the best way to deal with red spider mites is to be diligent in prevention and treatment. Before red spider mites occur, frequently spray the Chinese rose plants with plant essential oils and 200x alcohol solutions to prevent diseases and pests.
Once red spider mites occur, it's essential to do a thorough cleanup immediately, wiping or pressure washing the leaves to first remove the visible red spider mites, and then spray the medicine. The drug concentration can be lower, but all parts need to be sprayed, with the potting soil surface being a key area to focus on.
After spraying, continue to wipe the leaves to timely remove the remains of red spider mites and any struggling mites and eggs. The process of cleaning red spider mites is like cleaning; if the garbage is not cleaned up, even if the existing flies are killed, new ones will come. Since we get infected with red spider mites, there must be a reason. But if we can keep the leaves clean and frequently spray miticides on the potting soil surface, then red spider mites will have nowhere to hide.
As for outdoor Chinese roses, especially climbing roses, it can be much more troublesome. Once infected with red spider mites, it's usually widespread, and in such cases, we can only choose to rotate multiple types of medicines, but there may still be resistance and unsatisfactory treatment results.
For example, if you have many climbing Chinese roses against walls, they are prone to爆发 red spider mites after flowering in spring. In fact, they are already泛滥 now, with the leaves turning white. But I haven't gone to spray many bottles of medicine because nature will help me deal with the red spider mites. When the plum rain season comes in Zhejiang, it's the time for red spider mites to be wiped out.
This also shows that red spider mites are really afraid of water. So, if outdoor Chinese roses get red spider mites, can we also use water to control them? If there is an automatic watering system, you can try it, such as spraying water for 5 minutes, then stopping for 10 minutes before continuing, to increase the humidity of the entire Chinese rose plant and its surrounding environment.
If there is no automatic watering system, you can also water manually more often. Each time you water, turn the sprinkler喷头 upside down and spray the back of the Chinese rose leaves. Both potted and climbing Chinese rose hedges can be operated this way. If you have time, you can rinse 2-3 times a day. The water should have some pressure so that the red spider mites can be carried away by the water flow. This is what I do before the rainy season to eliminate red spider mites, along with spraying medicine.
Of course, just rinsing with water is not enough; the medicine also needs to be sprayed, and it should be done every 7 days. Two miticides can be used together or alternated. When spraying the medicine, the surrounding ground and soil surface should also be sprayed as key areas.
What if you don't have enough time to manage them?
You can try using the natural enemies of red spider mites, predatory mites, to control their development.
Predatory mites are smaller than red spider mites and specifically like to eat red spider mites, causing no harm to plants. They are beneficial mites. After releasing predatory mites, they will eat red spider mites, achieving the effect of control.
Predatory mites are used in the production of citrus and strawberries to control red spider mites and have not yet been widely promoted in gardening. Some flower friends have tried them, with varying results. I'll briefly explain the usage and precautions of predatory mites.
Firstly, to achieve lasting results using predatory mites to treat red spider mites, you need to ensure ecological balance, meaning that the predatory mites need to have food to eat, as they will cannibalize each other or starve to death without food.
However, if the red spider mites are in a爆发 state and their numbers far exceed what the predatory mites can consume, the effect may not be as expected.
So, if your Chinese roses are already infected with red spider mites, please first spray miticides once. Although this won't completely eliminate the infestation, it can greatly reduce the number of red spider mites. After 3-5 days, release the predatory mites.
If the predatory mites you release are okay, they should normally be able to control the development of red spider mites, preventing an outbreak. However, when the red spider mites can be completely eliminated depends on the ratio of red spider mites to predatory mites, which should be easy to understand. So, for flower friends who want to use predatory mites, I suggest releasing more, even though the predatory mites will cannibalize each other when there's not enough to eat. But our goal of controlling red spider mites has been achieved.
Why haven't I recommended this method to everyone? Mainly because it's hard to maintain long-term. Since Chinese roses have many diseases and pests, we need to spray medicine regularly for prevention, and many insecticides can kill predatory mites. Not only that, but some fungicides may also harm predatory mites, which is quite problematic.
Also, predatory mites are insects, and many flower friends will get Goosebumps when they see insects. If your Chinese rose pots are full of tiny insects, even if they are beneficial, you might still feel disgusted.
Of course, if your Chinese roses are really difficult to control, you might as well try releasing predatory mites. After releasing them, try to avoid using pyrethroid insecticides. Pay attention to observations, and if you use the wrong medicine and kill the predatory mites, replenish them in time, which can also be a solution.
If your Chinese roses are planted in the ground, it is recommended that you release predatory mites before the outbreak period of red spider mites and plant ageratum between the Chinese roses. Before red spider mites appear, the pollen of ageratum flowers can provide food for predatory mites, preventing them from running away or starving to death.
The above is a specific introduction to "What medicine should be used for the red spider mite on Chinese roses?" I hope everyone will like it!