What to do when potted lotus gets bugs? Cut off dead leaves and spray pesticides to prevent and control pests and diseases

In nature, any plant can get bugs, and lotus is certainly no exception. Lotus is one of China's top ten famous flowers, and it is deeply loved by people for emerging unstained from the mud. Many households now grow lotus, but they do not know what to do when lotus gets bugs. Below, follow the editor to take a look at lotus pest and disease control.

1. What to do when lotus gets bugs: spray pesticide to kill the insects

Lotus is one of China's top ten famous flowers. With advances in potting techniques, many people have started growing lotus at home. What to do when lotus gets bugs is the most common problem. Common lotus pests include aphids, water maggots, stinging caterpillars, cotton leafworm, and so on. Different pests require different control methods. Below, follow the editor to take a look at lotus pest and disease control.

2. Lotus pest and disease control

1. Aphids

Aphids generally begin harming lotus floating leaves and small standing leaves in early May, often concentrating on leaf buds, flower buds, and the undersides of leaves. Larvae and adults gather to suck sap, with the most severe damage in late spring and autumn. Control method: use a 2000-fold dilution of 20% fenvalerate.

2. Pear green stinging moth and brown stinging moth

Pear green stinging moth and brown stinging moth, commonly known as stinging caterpillars, mainly harm standing leaves as larvae, generally from mid-June to September. Control method: remove and burn infested leaves. Spray with a 800-1000 dilution of 90% trichlorfon, or a 3000-fold dilution of 2.5% deltamethrin.

3. Water maggots

The larvae suck sap on the stem nodes and roots of lotus, causing diseased leaves to turn yellow. Control method: generally lime can be used to drive them away and kill them. Spread 10-15 kg per 667 sq m (1 mu), but do not use excessively.

4. Bagworms

They mainly harm standing leaves. In severe cases, twenty or thirty can hang on the undersides of lotus leaves, eating new and old lotus leaves full of holes, or even eating them completely.

Control method: handpick and remove them, and promptly remove diseased leaves. Spray with a 1500-2000 dilution of 90% trichlorfon plus an 800-fold dilution of Bacillus thuringiensis. Clear weeds around the lotus field and carry out disinfection treatment. For lotus pest and disease control, let us continue reading below.

5. Cotton leafworm

Also known as lotus leafworm and cotton leafworm. Newly hatched larvae gather on the undersides of leaves and chew them, leaving only the upper epidermis and veins, so the damaged leaves look like window screens. After the third instar they disperse and cause damage, eating the leaves into notches. When outbreaks occur, they can eat all the leaves and even bite young tender stems. During major outbreaks, after larvae eat all the leaves in one field, they can migrate in groups to nearby fields and cause damage.

Control method: spray with a 500-800-fold dilution of domestic B.t. emulsion or Bacillus thuringiensis No. 6 liquid. Spray with a 1000-fold dilution of 50% phoxim emulsifiable concentrate, or a 3000-fold dilution of 2.5% deltamethrin emulsifiable concentrate, or a 4000-fold dilution of 21% methomyl emulsifiable concentrate. Through the above introduction, you now know what to do when lotus gets bugs, right? Below let us take a look at lotus disease control.

3. Lotus disease control

1. Black spot disease

In the early stage of the disease, chlorotic yellow spots appear on the leaves, later becoming round or irregular, turning brown with concentric rings, sometimes with a yellow-green halo at the edges, and bearing black mold layers, 5-15 mm in diameter. In severe cases, the spots merge into patches, and except for the veins, the entire leaf turns yellow and withers. This disease is caused by fungi and occurs severely in the rainy season. When lotus ponds or potted plants are continuously cropped, or when too much nitrogen fertilizer is applied or summer water temperatures are too high, the disease is very severe.

Control method: strengthen cultivation management and promptly remove diseased leaves. For severely affected plants, replace the soil before replanting, and do not apply excessive nitrogen fertilizer. When the disease occurs, spray a 600-800-fold dilution of 75% chlorothalonil for control.

2. Rot disease

It mainly harms leaves, flower stalks, and lotus roots. When it harms leaves, green wilt-colored patches first appear along the leaf margins. Soon the lesions spread inward, and finally the entire leaf turns brown and necrotic. When flower stalks are affected, they turn brown and sunken along the stomatal lines. When lotus roots are affected, they first turn brown, gradually spread to the rhizome nodes, and become longitudinally necrotic. White thread-like structures or pink powdery masses can also be seen growing from diseased lotus nodes. This disease is usually more severe under continuous cropping and in poor soil. If leaves are frequently submerged in water, they are also prone to the disease.

Control method: apply fertilizer appropriately, and take care that the water level is not too high, so as to avoid soaking the leaves and causing disease. When black spots are found on leaves, remove the diseased leaves as early as possible, but keep the junction between the leaf and petiole to prevent rainwater from entering through the petiole wound. Spray a 500-fold dilution of 50% carbendazim, or a 500-fold dilution of 50% phosethyl-Al for control.

3. Brown spot disease

It mainly harms lotus leaves. Round spots 0.5-8 mm in diameter appear on diseased leaves, light brown to yellow-brown, with darker edges. In the later stage of the disease, many small black mold spots grow on the lesions. It occurs more severely in rainy autumn. The pathogen mostly overwinters on residues.

Control method: remove residual leaves to reduce the source of disease. For severe cases, spray a 500-fold dilution of 50% carbendazim, or use an 800-fold dilution of 80% zineb for control. The above is all the content on lotus pest and disease control and what to do when lotus gets bugs. I hope it can help you.

What to do when potted Chinese rose gets bugs: pest and disease control of Chinese rose (spray pesticide to kill insects)

Any plant can get bugs, and Chinese rose is certainly no exception. Chinese rose is one of the easiest indoor flowers to grow, with a very high survival rate, but if you do not care for it properly, it can also die. The most common pest of Chinese rose is red spider mite, and this pest causes the leaves of Chinese rose to gradually turn yellow and then wither. So what should be done when Chinese rose gets bugs? Let us take a look at pest and disease control of Chinese rose.

1. What to do when Chinese rose gets bugs: spray pesticide immediately

Chinese rose is a plant that greatly loves light. If it is kept out of light for a long time, it will develop symptoms and get bugs. It is very common for Chinese rose to get bugs, and there are many reasons for it, so the right remedy must be chosen for the cause. The most common insects include red spider mite, aphids, thrips, and so on. What should be done when Chinese rose gets bugs? Let us take a look at the pest and disease control methods for Chinese rose.

2. Pest and disease control of Chinese rose

Spider mites are also called red spider mites. The main spider mites harming Chinese rose are of two kinds: one is Tetranychus cinnabarinus, which is vermilion, and the other is Tetranychus urticae, which is insect-yellow to yellow-green.

Symptoms: spider mites generally parasitize the undersides of leaves and suck sap, while many tiny yellow-white spots appear on the upper side of the leaves, and then the leaves gradually turn yellow and finally fall off. In severe cases, the entire flower buds and branches become covered with spider mites.

Solution: during the dormant period, spray lime sulfur mixture evenly, and in the early stage of occurrence, spray abamectin and propargite, pyridaben, or mite-killing agents.

2. Flower aphids

Aphids gather on the buds, tender leaves, and flower buds of Chinese rose and suck their sap. In severe cases, there will be honey-oil-like black secretions, affecting flower quality and the growth of Chinese rose.

Solution: when aphids lay eggs to overwinter in autumn and winter, imidacloprid and abamectin can be used alternately for control.

3. Thrips

When thrips live on tender leaves, they can cause the tips to die, preventing growth. If they feed on the undersides of leaves and also excrete brown substances, the undersides of the leaves become deformed, and gray-white or gray-brown streaks also appear on both sides of the midrib, causing deformation and bending.

Solution: for this situation in Chinese rose pest and disease control, pesticides can be sprayed for treatment, choosing those containing active ingredients such as imidacloprid, acetamiprid, and thiamethoxam.

4. Rose stem sawfly

It occurs once a year, laying eggs under the epidermis of stems with an inner diameter in April-May. After hatching, the larvae bore into the stem, then cut downward in a spiral along the cambium while feeding, all the way to the lower part of the branch. After maturing, they make a pupal chamber in the branch, shaped like a barrel.

Solution: an effective control method is to cut off the diseased branches, cutting downward until the larvae are found, and then eliminate them.

5. Short-horned grasshopper

The short-horned grasshopper bites leaves into many holes. It occurs 2 generations a year, lays eggs to overwinter in winter, and eggs hatch into adults in May-June.

Solution: spray a 1000-fold dilution of 50% fenitrothion. The mortality rate is very high and the effect is very good.

What to do when potted Chinese rose gets bugs: everyone can identify the cause according to the above descriptions and then apply the right remedy. The above is the complete answer on pest and disease control of Chinese rose. I hope it can help you.

What to do when agave gets bugs: agave pest and disease control / spraying pesticide to kill scale insects

Agave, a foliage plant, blooms only once in its lifetime and dies shortly after blooming. This characteristic leaves a deep impression. In daily life, many people grow agave at home, but for certain reasons the plant can be attacked by insects. So what should be done when agave gets bugs? The following are several common agave pests and diseases and their solutions. Follow the editor to learn more.

1. What to do when agave gets bugs: find the cause

In agave cultivation methods, the environmental requirements of agave are introduced, and once flower growers cannot meet them, it will become diseased and be attacked by insects. As for what to do when agave gets bugs, first we need to determine which pest it is, and then solve it accordingly. For the specific pest and disease control of agave, let us continue reading below.

2. Agave pest and disease control: scale insects are the main pest

1. Scale insects

This insect harms many plants, naturally including agave. It is understood that scale insects mainly harm agave leaves. In severe cases, the leaves turn yellow, wither, and even fall off, seriously affecting the indoor ornamental effect of agave.

Solution: when the above symptoms are found and scale insects are discovered, flower growers can solve it in two ways: first, when there are few scale insects, they can be scraped off directly; second, when there are many scale insects, a 50% parathion spray can be used for spraying and killing.

Netizen: Bugs have appeared on my agave at home. What should I do?

As shown in the picture above, this is a problem encountered by many flower growers with potted agave, and this is scale insects. At this point the pest infestation is obviously already severe, so flower growers can use a 50% parathion spray for spraying and killing. In addition, everyone can also buy Jiebijiezhi online; one spray is enough.

2. Armored scales, mealybugs, and root mealybugs

Besides scale insects, armored scales, mealybugs, and root mealybugs are also among the pests and diseases of agave. The first two harm leaves, while the latter harms roots, and in severe cases can even cause plant death. The solutions for the three pests are different, as follows:

① For armored scales and mealybugs parasitic on agave leaves, after discovery, the insect bodies can be removed with bamboo sticks, tweezers, and so on, and then pesticide can be sprayed on the plant. Specific pesticide: spray with a 1000-fold dilution of 80% dichlorvos emulsifiable concentrate.

② For root mealybugs, the solution is different. Once discovered, flower growers should promptly repot and change the soil. When changing the soil, clean the insect bodies from the roots and cut off rotten roots. After that, soak the remaining root system in the pesticide solution for 1-2 hours, take it out to dry, and then repot.

Agave diseases: leaf spot disease / anthracnose / gray mold

After reading the above content about agave getting bugs, everyone should know what to do, right? However, besides pests, diseases also harm the health of agave. It is understood that common agave diseases include leaf spot disease, anthracnose, and gray mold. The specific symptoms and solutions are as follows:

1. Leaf spot disease

This disease is one of the common diseases of agave. Symptoms: tiny lesions on the leaves, nearly round, gray, and gradually expanding and merging into irregular large rotten patches.

Solution: when the above symptoms are found, flower growers should promptly remove residual diseased leaves. When the condition is severe, spray with a 1000-1500-fold dilution of emulsifiable concentrate, once every 7-15 days, 2-3 times. After a period of time, the plant will recover.

2. Anthracnose

One of the main diseases of agave, it mainly harms leaves, causing them to develop lesions and spots. The spots are initially light green or dark yellow-brown, then gradually turn black-brown, and finally the entire leaf rots. Therefore, this disease is also one of the reasons why agave leaves turn yellow.

Solution: when this disease is found, promptly remove the rotten leaves to avoid spread of the pathogen. When necessary, spray a 800-fold dilution of 70% thiophanate-methyl or a 100-fold dilution of copper-green. Spray once every 7-10 days. It is best to alternate several pesticides to avoid resistance.

3. Gray mold

Yet another disease of agave, it mainly harms agave leaves. Symptoms: yellow-green to dark green water-soaked patches appear on the leaves, gradually expand, become soft and decayed when humid, and gray or earthy yellow mold layers form on the affected parts.

Solution: when this disease is found, remove the diseased leaves promptly to avoid contact infection. When necessary, spray a 500-fold dilution of 50% carbendazim or a 500-fold dilution of 75% chlorothalonil. After several applications, it can basically be solved.

The editor has introduced the content about agave pests and diseases up to here, and I believe everyone has remembered it. In fact, agave is very easy to grow, and its effects and functions are very strong. It not only has ornamental value but also purifies the air. Therefore, in daily care, flower growers must be careful again and again!