What to do with the growth of insects? pest control of green-leaf orchids / 4 insects and 3 diseases

As the leaves of Cymbidium, the adaptability of Cymbidium is very strong, so it is easy to raise and can not be affected by diseases and insect pests. However, growing plants indoors will inevitably catch diseases and be infested by insects for a variety of reasons, and the green leaf orchid is no exception at this point. So, what should we do if the green-leaf orchid grows worms? The following is the pest control of 7 species of Cymbidium, follow the editor to have a look.

First, the green leaf hanging orchid grows the worm, sprays with medicine

Because the green leaf orchid is good-looking and can absorb harmful gases such as formaldehyde, it is kept indoors by many people. But in the breeding process, because of the basin soil stagnant water, poor ventilation and other conditions, it will suffer diseases and insect pests. As for the green leaf hanging orchid long worm how to do, in fact, is very simple, indeed insect pests, and then aimed at spraying can be solved.

II. Disease and insect pest control of green leaf orchid

1. Scale insects

In the case of dense plants and poor ventilation, the green-leaf magnolia is easy to produce scale insects, which will adsorb on the leaves and make the leaves lose their luster. Symptoms of damage: the leaves of Cymbidium are yellow, and the whole plant will die in severe cases.

Control method: move the plant to a ventilated place, cut off the diseased leaves, and then spray special insecticides, such as 40% omethoate diluted into 1000 times solution or 50% malathion diluted into 1500 solution; if there are few scale insects, wipe off the insect with laundry powder.

2. Aphids

The main pests of Cymbidium are mainly harmful to leaves and buds, absorb a lot of juice, and lead to poor plant growth. Because aphids multiply, they are usually found densely packed, not only frightening, but also very disgusting.

Prevention and control methods: after aphids are found, aphids can be prevented artificially, and the aphids can be brushed off with brushes and buried in basin soil; in addition, 50 grams of fresh or dry red wine chili peppers can be used, 30 to 50 grams of water can be added and boiled for about half an hour. spray the parts invaded by aphids with its filtrate.

3. Whitefly

One of the common pests that invade the green-leaf orchid, it is small in size, propagates quickly, parasites on the phloem of the green-leaf orchid, and absorbs its juice. Whitefly is generally difficult to detect, once it is found to be a large area, when the plant has been sucked away a large amount of juice, very weak.

Control method: after the whitefly is found, the whitefly should be sprayed immediately. 1000 times of imidathion EC or 1000 times of omethoate can be used. The best spraying time is in the early morning when the adult activity of whitefly is weak.

4. Red spider

In addition to shell insects, aphids and whitefly, red spider is also one of the diseases and insect pests of Cymbidium, which mainly harms the leaves of the plant. After being attacked by red spiders, the diseased leaves showed small yellow and white spots at the initial stage, gradually turned red and extended to the whole leaf, and even caused the leaves to curl, wither and fall off.

Control methods: after the discovery of red spiders, 1500-2000 times trichloropropanol EC can be sprayed every 7 days, 2-3 times, and the effect is good.

5. Root rot

The common disease of green leaf orchid is root rot, which is caused by stagnant water in basin soil and poor ventilation. Symptoms: root rot, leaves withered and yellow, until death.

Prevention and treatment methods: when the above diseases are found, 50% carbendazim wettable powder can be sprayed 500 times, or it can be irrigated directly once a week; when the disease is serious, pull out the green leaf orchid, remove its rotten roots, and change the soil and basin to replant.

6. Anthrax

The disease mainly occurs under the conditions of high humidity and muggy environment, stagnant water in flowerpots, overdense plant clumps, poor ventilation and so on. Symptoms: the diseased leaves appear yellowish-brown and sunken spots, then expand called dark brown round spots, the leaf tip withered, and then the whole plant dies.

Prevention and treatment: cut off the diseased leaves and burn them centrally to reduce the source of the disease; in severe cases, spray 1000 times of carbendazim or 1000 times of methyl topiramate for antiseptic, which can be effective after 2-3 times.

7. Leaf blight

In the environment of higher temperature, more humidity, poor ventilation, the green leaf orchid will also suffer from leaf blight. Symptoms: the leaves of Cymbidium turn yellow at first, then turn brown, and finally spread to the whole plant.

Prevention and treatment method: when the above symptoms are found, 70% of the concentration of Dysen zinc is diluted into 600 times solution to spray for prevention and treatment, once every 15-20 days, 2-3 this can be effective.

What if the pearl orchid grows worms? pest control of the pearl orchid / 4 insects and 3 diseases

Pearl orchid, a common succulent plant, has green leaves and looks like pearls. In life, many flower friends love the pearl orchid very much, but in the process of breeding, because they can not raise, the plant has the symptom of disease, so what about the pearl orchid? The following are 6 kinds of pearl orchid pest control, let's go and have a look!

First, the pearl hanging orchid long worm, spray with medicine

The breeding method of pearl orchid is not difficult, as long as it is carefully maintained in accordance with the method, it can grow very well. But in the breeding process, because of the basin soil stagnant water, poor ventilation and other conditions, will suffer diseases and insect pests, then pearl hanging orchid worms how to do? In fact, it is very simple, flower friends only need to identify insect pests, and then solve the problem of spraying.

II. Disease and insect pest control of Pearl Cymbidium

1. Spring aphid / summer mite

Aphids: Pearl orchids rarely have diseases and insect pests, but aphids in spring are something we need to guard against. The insect mainly harms leaves and buds and absorbs a lot of juice, resulting in poor plant growth. Prevention and treatment: wipe it off with a brush in time, or spray 1500 times omethoate to kill it.

Mite: in addition to the spring aphid, the summer mite is also one of the pests of the pearl orchid, which mainly harms the leaves of the plant, causing the leaves of the orchid to curl, wither and yellow. Control methods: pay attention to ventilation and increase leaf humidity, can reduce the infection of mites; when mites are found, they are killed with 1000 times triclofenac.

2. Scale insects

In addition to aphids and mites, in the case of dense plants and poor ventilation, pearl orchids are also vulnerable to scale insects. The insect will attach to the leaves and make the leaves lose their luster, causing the pearl orchid to wither and, in severe cases, the whole plant will die.

Control method: move the plant to a ventilated place, then cut off the diseased leaves to reduce the source of insects; then spray 50% malathion diluted into 1500 solution for control.

3. Whitefly

One of the common pests that invade the pearl orchid, it is small in size, reproduces quickly, parasites on the phloem of the pearl orchid and absorbs its juice. Whitefly is generally difficult to detect, once it is found to be a large area, when the plant has been sucked away a large amount of juice, very weak.

Control method: after the whitefly is found, the whitefly should be sprayed immediately. 1000 times of imidathion EC or 1000 times of omethoate can be used. The best spraying time is in the early morning when the adult activity of whitefly is weak.

4. Root rot

Pearl orchid is not easy to get sick, but stagnant water and poor ventilation in the basin soil, in addition to causing root rot, root rot may also occur. After suffering from root rot, the root of the pearl orchid will rot, and the leaves will wither and fall off until death.

Prevention and treatment: to find the above symptoms, you can spray 50% carbendazim wettable powder 500 times, or directly irrigate its roots, once a week.

5. Other diseases

Dry branches and leaves: Pearl orchids rarely get sick, but in high temperature and low humidity, it will show symptoms of drying up. Prevention and treatment: usually put it in a semi-shady place, prune the dry branches and leaves, and slowly restore as before. In addition, when the air is very dry, we need to spray water mist around the plant.

Leaf tip blackening: if there is a problem with the soil, or too much watering, it will also affect the normal water absorption of the root system of pearl orchid, and then the leaf tip will blacken. Prevention and cure method: take off the plant, then cut off the broken fibrous root, replace it with sandy soil and put it in a basin, and water it properly to make the pearl orchid grow new fibrous root.

Generally speaking, the pearl orchid is not difficult to maintain, just put it in a ventilated place, and be careful not to pour too much water, it will not suffer from diseases and insect pests. Of course, do not be afraid to find that the pearl orchid worm is sick, just solve it according to the above prevention and control methods. With regard to the prevention and control of diseases and insect pests of the pearl orchid, the editor has introduced it here, hoping to bring help to everyone.

What to do with the growth of insects? disease and pest control of Cymbidium / 3 insects and 3 diseases

As the best of orchids, the efficacy of Magnolia is very powerful, it not only has the ability to absorb formaldehyde, but also more beautiful than ordinary orchids, but also has a good use in medicine. But in the process of breeding, many flower friends' plants will have the condition of growing insects and getting sick, so what about the growing insects of Cymbidium chinensis? In this regard, the editor summarized the prevention and control of six kinds of common diseases and insect pests, together to have a look.

First, the golden heart hanging orchid long worm, spray with medicine

Although the orchid is not prone to diseases and insect pests, if it is not maintained according to the cultivation method of the orchid, it is easy to have stagnant water in the basin soil, poor ventilation, rotten roots and so on, resulting in the plant still growing and getting sick. As for the golden orchid long worm how to do, in fact, it is very simple, indeed insect pests, and then aimed at spraying can be solved. The specific symptom is the method of prevention and treatment, and let's move on.

II. Prevention and control of diseases and insect pests of Cymbidium

1. Scale insects

Once the golden orchid worm is found, we can consider it to be a shell worm. Because the insect is prone to outbreak in a poorly ventilated environment, it will attach to the leaves and make the leaves lose their luster. Symptoms of damage: the leaves of Cymbidium are yellow, and the plant will die in severe cases.

Control methods: if there are relatively few scale insects, you can wipe off the insects with laundry powder; when the disease and insect pests are long, you can spray with 1000 times the concentration of omethoate, or you can use 50% malathion diluted into 1500 solution for spray control.

2. Aphids

One of the main pests of Cymbidium, it mainly harms leaves and buds, absorbs a lot of juice, resulting in poor plant growth. Because aphids multiply, they are usually found densely packed, not only frightening, but also very disgusting.

Prevention and control methods: a small number of aphids can be removed by rinsing with plant ash on the leaf surface; when aphids are frequent, 40% imidophos is diluted into 1000 times solution and sprayed once every 7-10 days, and the harm can be relieved by continuous spraying for 2-3 times.

3. Whitefly

One of the common pests that invade the orchid, it is small, propagates quickly, parasites on the phloem of the orchid, and absorbs its juice. Whitefly is generally difficult to detect, once it is found to be a large area, when the plant has been sucked away a large amount of juice, very weak.

Control method: once it is determined that it is whitefly, everyone should immediately use medicine to control it. It can be sprayed with 1000 times of imidathion EC or 1000 times of omethoate with a concentration of 40%. The best spraying time is in the early morning when the adult activity of whitefly is weak.

4. Root rot

In the process of breeding, because of the stagnant water in the basin soil and poor ventilation, it will cause the roots of the orchid to rot, thus causing the plant to suffer from root rot. Symptoms: root rot, leaves withered and yellow, until death.

Prevention and treatment methods: when the above symptoms are found, 50% carbendazim wettable powder can be sprayed 500 times, or it can be irrigated directly once a week; when the disease is serious, pull out Magnolia, remove its rotten roots, change soil and basin and replant.

5. Anthrax

One of the common diseases of Magnolia lanceolata mainly occurs under the conditions of high humidity and muggy environment, stagnant water in flowerpots, overdense plant clusters, poor ventilation and so on. Symptoms: the diseased leaves appear yellowish-brown and sunken spots, then expand called dark brown round spots, the leaf tip withered, and then the whole plant dies.

Prevention and treatment: cut off the diseased leaves and burn them centrally to reduce the source of the disease; in severe cases, spray 1000 times of carbendazim or 1000 times of methyl topiramate for antiseptic, which can be effective after 2-3 times.

6. Leaf blight

In the environment with high temperature, high humidity and poor ventilation, Cymbidium will also suffer from leaf blight. Symptoms: the leaves of Magnolia turn yellow at first, then become brown spots, and finally spread to the whole plant.

Prevention and treatment method: when the above symptoms are found, 70% of the concentration of Dysen zinc is diluted into 600 times solution to spray for prevention and treatment, once every 15-20 days, 2-3 this can be effective.