Harm
Scale insects are the most common insect pests encountered by succulent insects. They start to break out in early spring. They will suck sap from stems and leaves, resulting in poor growth of succulent insects, and even wither and die.
Location
Scale insects are usually hidden in the center, back, withered leaves and dense leaf gaps, so deep that they can be easily removed with cotton swabs. The specific methods are as follows:
The method of extermination
Prepare 75% medical alcohol, wet it with a cotton swab, wipe the insect parts hard, and you will see the body become a small spot in a few minutes.
If the scale insects are very serious, they will be sprayed with medicine. Kill them at 800-1000 times of the liquid speed, and spray them on the insect damage parts according to the instructions.
In addition, we remind you that when we change soil in spring, burying a little carbofuran in the soil can play a preventive role, but the efficacy is only 3 months
Harm
The fleshy species of Euphorbiaceae, Compositae and Liliaceae are particularly susceptible to infection by the red spider, which sucks the juice from the tender leaves, and the leaves slowly grow brown spots and eventually die.
Location
When you find that the long leaf spot is dry, look at the back of the leaf to see if there are spider webs, and small red /White /dark insects. If there are red spiders
The method of extermination
1. First remove the spider web with a cotton swab, and then use a prescription to inhibit its diffusion, such as: 50 times diluted soap solution with water, 25 times diluted tobacco solution with water, 10 times diluted boiled chili water, etc.
2. Red spider is a mite, and special medicine can be used to kill it completely, such as dicofol, jinmanzhi, acarid, etc.
Harm
Whitefly is mainly caused by poor ventilation, it will suck juice on the back of the leaves, secrete honeydew, bring a variety of mold, leading to yellow leaves, black powder, mildew spots.
The method of extermination
1. In the early stage of the disease, isolation should be carried out quickly, or the infection will be severe; wash thoroughly with clear water, especially the root, soak in the carbendazim medicine bath, ventilate and air dry, and then change the soil completely.
2. If the whitefly has spread to the whole plant, it is recommended to use dimethoate, dilute 1000 times and spray to kill it. After spraying for 2 days, use strong water to wash away the killed insect with black powder.
Attention: wear masks and wash hands in time during the whole operation.
Harm
Crassulaceae and Compositae are succulent and prone to aphids, which suck the juice of young leaves, leading to slower growth and weaker plants.
Kill method
When the quantity is not large, use toothpick or other sharp tools to stab the aphid to death. If the harm is serious, use imidacloprid to dilute 1500 times and then spray to kill.
Harm
Dark, humid, sultry and unventilated environment is especially easy to breed xiaoheifei, which has a fast reproduction speed and is extremely dangerous to flood.
Xiaoheifei likes to eat fleshy young leaves, rhizomes and seedlings, which cause leaves to turn yellow, rot, grow weaker and cause bacterial infection.
The method of extermination
1. Lure method: put a black light lamp or a yellow stained insect plate with a special smell at a place slightly higher than the flowerpot.
2. Garlic insecticidal: smash the garlic, add half a kilogram of water to soak for an hour, and spray it on the insect infested part, once every three days, three times in a row.
3. Mosquito repellent incense: point a section of mosquito repellent incense in the flowerpot, cover it with a plastic bag or a plastic bucket, seal it for 12 hours, and kill all insects!
4. Spraying: spray with imidacloprid, trichlorfon, flower protector, etc., once every 5 days, 3-4 times in a row can kill larvae and adults, pay attention to wearing masks, wash hands with soap after spraying.
