What should I do if there are small green caterpillars on the leaves of the rose of Sharon?
You may not be aware of the small tricks for dealing with small green caterpillars on the leaves of the rose of Sharon. Let me share some knowledge with everyone.
First of all, I apologize for not updating the article on Monday. I spent a lot of energy on the exam last Sunday, even suffered from insomnia the day before, and managed to get through the day with two cups of coffee. I was really tired, so I didn't update the article. Actually, over the past few years, updating articles every day has not only become a habit but also a responsibility to the "Demon Fans."
Many flower friends say that it is not easy to raise roses of Sharon. I just finished fighting with Xiaohong, and now I have a nest of green caterpillars. It's really difficult! In fact, these nests of caterpillars are relatively easy to treat. Please refer to the introduction below for the specific method.
Rose of Sharon Caterpillars and Control
Rose of Sharon caterpillars is a general term referring to a type of caterpillar, such as the larvae of noctuid moths, looper moths, and leaf miners.
The larvae of noctuid moths are usually smaller in size and usually hide on the back of rose of Sharon leaves to eat the leaf flesh, causing many small leaf spots without flesh or even holes.
Looper moth larvae, also known as measuring worms, are masters of disguise, with colors similar to twigs. They are often difficult to spot. Loopers mainly eat the leaves of the rose of Sharon. If you find signs of leaf damage, you need to look carefully.
If your rose of Sharon leaves are eaten by caterpillars but you can't find the caterpillars, I suggest you directly spray with insecticides such as deltamethrin or flonicamid, which are very effective. If there are also diseases or mites, you can use combined drugs for treatment. To maintain the health of rose of Sharon, preventing diseases and pests is very important. It is recommended to follow the comprehensive prevention and control methods introduced in the book "How to Raise Rose of Sharon from Scratch" for prevention and treatment.
In fact, the most common caterpillars in summer for rose of Sharon are leaf miners. Compared to the destructive power of leaf miner larvae, the other two caterpillars are far behind.
First, let's get to know the rose of Sharon leaf miner.
The yellow caterpillar in the picture above is a leaf miner, and it is laying eggs. The rose of Sharon leaf miner lays its eggs in the branches of the rose of Sharon. After laying the eggs, a black stripe will be left on the branch, and there are already many eggs inside, but they are too small to handle at this time.
As the eggs grow, the original black line will crack open, and you will see shiny eggs around the edges of the crack. At this point, we can directly puncture the eggs with a toothpick or apply insecticide.
When the number of potted rose of Sharon is small, we can easily find the un-hatched eggs, but for outdoor cultivation or for flower friends with a large number of roses of Sharon, they often find the leaf miner larvae when they are already quite large, and the leaves of the rose of Sharon have also been eaten.
To deal with rose of Sharon leaf miner larvae, I suggest you manually kill them, which is more convenient and faster than using pesticides. Simply cut the caterpillars in half with scissors to let them know the dangers of the world. Leaf miner larvae are usually concentrated, so manual killing is not difficult.
If you are afraid of caterpillars, you can use radar spray. Just spray gently from 50-60 cm away, and it will be solved. Remember to just press the spray button once, don't spray too much, otherwise, it may burn the leaves. After spraying, wait and observe for 1-2 minutes. Normally, the leaf miner larvae will fall off the leaves. If they don't fall off, it means you didn't spray enough, and you can supplement the spray.
The specific introduction of how to deal with small green caterpillars on the leaves of the rose of Sharon shared above is for reference by netizens.