The day before yesterday, the flower friends who participated in the Blue Demon Family Flower Raising Training Camp found that their moon leaves were all holes chewed by insects, and asked the Blue Demon what insects bit? Take a look at the following figure.
Most of the insects that eat the leaves are from the edge of the leaves, but this leaf is eaten from the middle, what kind of insect is so strange?
This kind of insect that starts directly from the middle of the leaf is a grasshopper, but this season, it is difficult to see the trace of grasshoppers, and the probability can be ruled out.
Recently, there is more rain, and when there is a lot of rain, what insects are the most? Friends who raise flowers outdoors are more aware of the season when there is a lot of rain, snails are the most annoying, snails are what leaves eat, and what is more hateful is that during the flowering season, snails also prefer to eat petals. The snail's nibbling method is more casual, sometimes along the edge of the leaf, sometimes directly from the middle of the leaf, so the snail will also cause this phenomenon of hollow in the middle of the leaf.
Snails generally come out at night and hide in the soil during the day, so snails are rarely seen during the day, you can look for them carefully by the pot, or at night, look for them on or near the affected plants, and maybe there are surprises.
This flower friend of the Blue Demon Training Camp, looking for it at night with a flashlight, found the worm below.
There should not be many flower friends who know this bug, but they should have heard its name, and it is the famous scarab beetle.
The main harm of adult scarab beetles to the moon flowers is to eat the leaves, resulting in a large number of mutilated leaves in the moon, if you just eat some leaves, in fact, there is nothing to fear, but the problem is that their babies.
Scarab beetle larvae, the root of the moon season is extremely harmful, and not easy to control, because the occurrence is slow and hidden, often when we find the scarab larvae, the moon season is close to withering. Last year, the vines of the Blue Demon were killed three or four times by the scarab larvae and the larvae of the Celestial Bull this month, and it was tears to say more.
So what to do? Since the scarab beetles have come and intend to leave their offspring, it is not possible to be soft, otherwise it will be our beloved moon season that will suffer.
Scarab adults are treated
Spraying with insecticide is a better treatment method, it is recommended to use high-efficiency cypermethrin, this drug has a good killing effect on most of the insects, because this product is out of the evening activities, it is recommended to choose the time of spraying in the evening, for scarab beetles, thrips, ground tigers these nocturnal insects, have a better effect, generally spray once on the line, or interval 7-10 days, spray again.
The adult scarab can be solved by spraying, but if the eggs of the scarab beetle are already laid in the soil, they will hatch into larvae and erode the main root, so it is necessary to prevent the larvae again.
The Blue Demon recommends using dichlorvos granules, or octylthion granules, buried shallowly next to the pot, and if it is a ground-planted moon, it is shallowly buried around the root system of the moon, paying attention to at least 15 cm away from the root. After shallow burial of insecticides, the insecticide will dissolve with each watering, which has a better effect on the prevention of underground pests, and the prevention effect will last longer.
If you find the scarab beetle adult, without larval prevention, the blue demon recommends that you also bury the insecticide in time to prevent it in the summer, although in the book "How to raise the moon season from zero", the blue demon details how to find the scarab larvae in time, but for novices or usually busier flower friends, it may be more difficult to observe in time, more is the underground pest.
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This article is the original sharing of the Blue Demon Garden. In my public name: Blue Demon Garden (ilanyao), a collection of thousands of flower raising experience articles are collected to help you less flower pits!