What to Do When Lisianthus Gets Pests? Control Methods for 2 Pests and 3 Diseases

Lisianthus (Eustoma) is a highly ornamental flower with very rich colors, and it can be seen in many gardens in our country. However, even the most beautiful flowers will show yellowing and wilting when pests and diseases appear. As for what to do when lisianthus gets pests, how should pest and disease control for lisianthus be done? Let me walk you through it below.

I. What to Do When Lisianthus Gets Pests / Chemical Control

II. Pest and Disease Control for Lisianthus

1. Aphid pest

In the pest and disease control of lisianthus, aphids are the most common pest. This pest is extremely small and difficult to spot with the naked eye; it can usually only be identified through certain symptoms. This pest mainly damages the leaves of lisianthus, sucking the sap from the leaves. In the early stage, many blighted spots appear on the damaged areas, and if left untreated for a long time, it will cause the plant to wither and die.

Control method: This pest is extremely harmful to lisianthus, so it is best to control it in the early stage. Generally, we can use a 2.5% deltamethrin emulsion diluted 3000 times with water to spray and kill the pest.

2. Leaf miner pest

The peak period for leaf miners is from April to May each year, so extra attention is needed at this time. This pest mainly damages the petioles and leaves of lisianthus, gradually breaking down the chlorophyll in the leaves, causing the leaves to turn yellow and wilt.

Control method: This pest has an extremely strong reproductive capacity, so it must be controlled as early as possible once discovered. We can use a 50% dichlorvos emulsifiable concentrate diluted 800 times with water to spray and kill the pest. Generally, 2-3 consecutive sprays will eliminate this pest.

3. Gray leaf spot disease

Gray leaf spot is a disease that is extremely harmful to plants. When it occurs, many round brown lesions appear on the leaves of lisianthus, and they gradually spread over time, eventually causing the plant to wither and die.

Control method: The peak period for this disease is from July to August each year, and it must be controlled promptly when discovered at this time. We can use 2.5% deltamethrin emulsifiable concentrate to spray the plant, generally once every 7-10 days, and after 2-3 times it can basically be cured.

4. Stem blight disease

Stem blight mainly occurs in environments with excessively high humidity, so the environment must be kept well-ventilated during cultivation. This disease mainly damages the stems of lisianthus. When it occurs, oval-shaped lesions appear on the stems, and over time they gradually spread to the whole plant, eventually causing the plant to rot and die.

Control method: When this disease appears, it must be controlled in the early stage; if dragged out for too long, it may not be completely curable. In the early stage, we can use a 38% oxadixyl-azoxystrobin solution diluted 800 times with water for spray control.

5. Root rot disease

Root rot is a disease caused by fungi. As its name suggests, this disease mainly damages the roots of lisianthus, causing them to gradually rot. The peak period for this disease is around March to April each year, so special attention must be paid at this time.

Control method: To control root rot, we can use a 50% baicaoqing wettable powder diluted 500-800 times with water to drench the roots of lisianthus, generally once every 3-5 days, and after 1-2 times it can basically eliminate this disease.

What to Do When Balloon Flower Gets Pests? Pest and Disease Control for Balloon Flower / 3 Pests and 2 Diseases

Balloon flower (Platycodon grandiflorus) is a plant with high medicinal value and also has a certain ornamental value. However, no matter how ornamental a plant is, pests and diseases will still appear if it is not properly cared for. So what to do when balloon flower gets pests, and how should pest and disease control for balloon flower be done? Let me walk you through it below.

I. What to Do When Balloon Flower Gets Pests / Chemical Control

II. Pest and Disease Control for Balloon Flower

1. Aphid pest

Aphids are a highly destructive pest that harms many plants, and balloon flower is no exception. They mainly damage the leaves and root stems of balloon flower, gradually sucking out the sap, eventually causing the balloon flower to gradually lose nutrients and wither and die.

Control method: This pest reproduces extremely quickly, so it must be controlled as early as possible. Generally, we choose to use a 50% malathion emulsion diluted 1000 times with water to spray and control the aphids.

2. Black cutworm pest

In the pest and disease control of balloon flower, the black cutworm is a relatively common pest. It looks somewhat like a silkworm and is black in color. It mainly damages the seedlings of balloon flower, so extra attention must be paid in the early stage of cultivation.

Control method: This pest generally appears when environmental humidity is high, so everyone must pay attention to ventilation during cultivation. To control this pest, we can choose 90% crystalline trichlorfon 750g spray to spray and kill it, and the effect is quite good.

3. Red spider mite pest

Red spider mites are omnivorous pests that harm many plants. They are very small and red in color. They mainly damage the leaves of balloon flower, slowly sucking the sap from the leaves, causing the leaves to gradually turn yellow and eventually shrink and fall off.

Control method: To control this pest, we can use a 50% fenitrothion solution diluted 1000—2000 times with water for spraying, generally once every 7-12 days, and after 1-2 times it can basically eliminate this pest.

4. Damping-off disease

Damping-off is a disease caused by fungi. It mainly damages the seedlings of balloon flower. When it occurs, water-soaked brown spots appear on the seedlings, and over time the color gradually darkens, eventually causing the seedlings to collapse and die.

Control method: To control this disease, we can choose to use a 75% quintozene dilution diluted 200 times with water to irrigate the seedlings. After treatment, the soil also needs to be disinfected to prevent residual pathogens in the soil.

5. Leaf spot disease

Leaf spot mainly damages the leaves of balloon flower. In the early stage of the disease, some round white lesions appear on the leaves, and over time they gradually spread, eventually causing the balloon flower to wither and die.

Control method: This disease is best treated promptly when discovered; if dragged out for too long, it will be difficult to cure completely. To deal with this disease, we can use a 65% zineb solution diluted 400~500 times with water to spray the diseased plants, generally once every 15 days or so, and after 2-3 times it can basically eliminate this disease.

In fact, the main cause of pests and diseases is improper care methods during the cultivation process, so methods are very important when growing balloon flower. For this point, you can refer to the cultivation methods for balloon flower, which are introduced in detail there. That is all for the pest and disease control of balloon flower. I hope this article can be of some help to everyone.

What to Do When Evening Primrose Gets Pests? Pest and Disease Control for Showy Evening Primrose / 2 Pests and 2 Diseases

Evening primrose is a plant with extremely high ornamental value, and it can be seen in many gardens and flower beds in our country. However, no matter how beautiful a flower is, it will still show yellowing and wilting when pests and diseases appear, which also destroys its overall beauty. As for what to do when evening primrose gets pests, and how pest and disease control for showy evening primrose should be done, let me walk you through it below.

I. What to Do When Evening Primrose Gets Pests

As for what to do when evening primrose gets pests, when this problem occurs, we first need to understand what kind of pest or disease it is. Only by knowing the cause can we handle it in a targeted way. The treatment method is also relatively simple; generally, choosing chemical treatment is the most direct option.

II. Pest and Disease Control for Showy Evening Primrose

1. Aphid pest

Showy evening primrose is a differentiated variety of evening primrose, and the pests and diseases it suffers from are the same as those of evening primrose. Aphids are a pest found on many plants. They mainly damage the leaves of plants, sucking the sap from the leaves, causing the plant to gradually lose nutrients and eventually wither and die.

Control method: When this pest appears, the most direct method is chemical treatment. We can choose a 50% fenitrothion emulsion diluted 1000 times with water to spray and kill the pest, generally once every 7 days, and after 2-3 times these pests can basically be completely eliminated.

2. Copper green chafer beetle pest

In the pest and disease control of showy evening primrose, the copper green chafer beetle is a relatively common one. It mainly damages the seedlings of evening primrose, gnawing on the seedlings, causing poor development, and if not treated promptly, it will even cause the seedlings to die.

Control method: To control this pest, we can choose to use stir-fried fragrant wheat bran mixed with a 90% crystalline trichlorfon solution diluted 30 times with water to make a poison bait, to trap and kill the copper green chafer beetle, thereby achieving control. There is also one point everyone should remember: after eliminating this pest, remember to disinfect the evening primrose promptly to prevent residual viruses.

3. Leaf spot disease

The main part damaged by leaf spot is the leaves of evening primrose. In the early stage, small brown spots appear on the leaves, and over time the area gradually expands. In the later stage, the leaves turn yellow and fall off.

Control method: This disease must be treated as early as possible. We can choose a 65% zineb solution diluted 400-500 times with water to spray the plant, generally once every half a month or so, and after 1-2 times it can basically eliminate this disease.

4. Rot disease

Rot disease is a disease found in many plants and is caused by bacteria or fungi. This disease mainly threatens the roots of plants. As the name suggests, when this disease occurs, it causes the plant to shrink and rot.

Control method: When this disease appears, it must be controlled in the early stage; if it is too late, it may be very difficult to cure completely. When discovered in the early stage, we can use a 75% chlorothalonil solution diluted 1000 times with water to irrigate the plant, which can achieve a very good control effect.

As for the question of what to do when evening primrose gets pests, I believe everyone understands after reading the above. In fact, the most important thing in the plant cultivation process is care. As long as you care for them carefully, pests and diseases will rarely appear. That is all for the pest and disease control of showy evening primrose. I hope this article can be of some help to everyone.