Asparagus fern has bugs: what to do? Ignore pest and disease control and the whole plant may die
Bugs or diseases on asparagus fern are extremely frustrating. They not only turn the leaves yellow but can also cause the asparagus fern to die, so you must take them seriously. So what should you do when asparagus fern has bugs? Today we introduce several common methods for pest and disease control in asparagus fern.
What to do when asparagus fern has bugs
The pests that may appear on asparagus fern are mainly red spider mites, scale insects and aphids. If asparagus fern has bugs, what should you do? Getting rid of these pests is a given, but different pests have different characteristics, so the correct pest and disease control methods for asparagus fern need to be adopted.
1. Red spider mite
Symptoms: Silken webbing appears on the underside of the leaves, and the leaf color becomes abnormal, for example turning yellow. Watch the leaves closely. If many leaves show this condition, it should be dealt with promptly.
Treatment: (1) In 400 ml of water, drip in 4 drops of propargite, fenvalerate or huachongjing, then mix into a solution and spray; (2) drip 8 drops of dicofol or dimethoate into 400 ml of water, dilute into a 1000-fold solution and then spray.
2. Scale insect
Symptoms: Leaves shrivel and wither; in severe cases the entire asparagus fern dies. The pests also appear on the branches, fruits and other parts of the asparagus fern. So what should you do when asparagus fern has bugs at this point? The methods are as follows.
Treatment: (1) Brush the scale insects off with a soft brush; if the infestation is severe, cut off the branches; (2) when there are many scale insects, use chemicals for control. You can dilute 40% omethoate into a 1000-fold solution and spray, once a week; generally 3 times is enough to clear the scale insects.
3. Aphid
Symptoms: Aphids usually appear on the young leaves, tender stems and flower buds at the top of the plant. If aphids grow on the leaves and stems, the plant shows slow growth, yellowing and even deformation.
Treatment: (1) Cut off the withered and shriveled branches and leaves; (2) use 50% malathion emulsion diluted into a 1000-fold solution and spray.
Disease control for asparagus fern
1. Leaf blight
Symptoms: Infection starts from the leaf margins and leaf tips. At first the lesions are irregular in shape and red-brown to gray-brown in color; afterward the lesions join together into patches, and small black dots form on the lesions.
Treatment: (1) Lower the temperature and give the asparagus fern an environment with ventilation and light, because leaf blight generally occurs in poorly ventilated and high-temperature environments; (2) spray 200-fold Bordeaux mixture, or 50% carbendazim wettable powder at 500-600-fold solution.
2. Root rot
Symptoms: In the early stage, individual lateral roots and fibrous roots may be infected, then it gradually spreads to the main root. Newly grown leaves begin to turn yellow, then the leaves wilt, though they recover at night. In the end the root bark turns brown and separates from the pith, and then the whole plant dies.
Treatment: (1) When watering, be careful not to let water accumulate in the pot, and keep the ambient temperature no lower than 5°C; (2) before onset or in the early stage of disease, use a 1500-3000-fold solution for root drenching, 200 ml of solution per plant. If the disease is severe, remove the diseased plants and at the same time use a root-firming product for root drenching.
3. Rust
Symptoms: On the affected parts, spore accumulation can produce small blister spots of different colors, or blister-like, cup-like or hair-like structures; afterward symptoms such as leaf drop and poor growth may appear.
Treatment: (1) Promptly cut off diseased branches and leaves and burn them in a centralized way to prevent spread; (2) in the early stage of disease, spray 15% triadimefon wettable powder at 1000-1500-fold solution, once every 10 days, for 3-4 consecutive sprays.
What to do when moss rose has bugs: pest and disease control for moss rose / 3 pests
During the growth of moss rose, the problem people least want to encounter is pests and diseases. Such problems are extremely harmful to it, not only affecting its appearance but also affecting its life. So what should you do when moss rose has bugs? What is needed for pest and disease control of moss rose? Below, the editor takes everyone through it.
I. What to do when moss rose has bugs
II. Pest and disease control for moss rose
1. Aphid
Aphids are one of the more frequently occurring pests and diseases of moss rose, and also one found on many plants. They are a phytophagous insect that mainly harms the leaves and stems of moss rose. They gradually suck out the sap, causing the plant to lose a large amount of nutrients, and over time they can also cause the plant to gradually wither and die.
Control method: There are many ways to deal with this pest. We can prune off the affected branch tips and destroy them in a centralized way, then disinfect the plant. Of course, chemical treatment can also be used. Generally, 2.5% fenpropathrin emulsion at 3000-fold solution can be sprayed on the affected moss rose, once every 5-7 days. After 1-2 times, this pest can be cleared.
2. Apricot globose scale
Apricot globose scale is an insect of the order Homoptera and is one of the more harmful pests and diseases of moss rose. These pests vary in size: the small ones are only 3 mm and the large ones can reach 45 mm. This pest parasitizes the stems of moss rose and sucks its sap for its whole life, not stopping until the plant dies from excessive nutrient loss.
Control method: Apricot globose scale is a pest with extremely strong reproductive capacity, so when this pest appears on moss rose it must be controlled in time. If delayed too long, it becomes very difficult to eradicate. When dealing with this pest, we can use 50% malathion emulsion at 800—1000-fold solution to spray and kill it directly.
3. Almond sawfly
Almond sawfly is an insect of the class Insecta and is also one of the very harmful pests and diseases of moss rose. This pest is generally mostly black and relatively small in size. It mainly harms the fruit of moss rose, gradually gnawing at the fruit, and the bacteria it carries can also cause some adverse reactions in the plant.
Control method: To control this pest, we can spray the plant once before moss rose sprouts and once in late May each year with 50-80-fold dormant oil emulsion plus 1500-fold chlorpyrifos. If this pest has already appeared, we can use 50% dichlorvos emulsifiable concentrate at 500-800-fold solution to spray and kill it directly.
Summary: After reading the above, everyone should have some understanding of the pest and disease problems of moss rose. In fact, such problems are mainly caused by improper care. When you have time, you can read the article on moss rose cultivation methods, which has detailed care instructions. The editor will not introduce too much here.
What to do when nine-joint orchid has bugs: pest and disease control for nine-joint orchid / 1 pest, 4 diseases
Nine-joint orchid is a plant with high ornamental value, and it can be seen in many gardens in our country. However, even a plant with high ornamental value will wither if pests and diseases appear. Regarding what to do when nine-joint orchid has bugs and what is needed for pest and disease control of nine-joint orchid, below the editor takes everyone through it.
I. What to do when nine-joint orchid has bugs / timely control
II. Pest and disease control for nine-joint orchid
1. Scale insect damage
In pest and disease control for nine-joint orchid, scale insects are the most common pest. They mainly harm the leaves and branches of nine-joint orchid. In the early stage of attack, some brown spots appear on the leaves, and over time they gradually spread over the whole plant, ultimately causing leaves to fall off and the plant to wither and die.
Control method: When this pest appears, it must be dealt with as early as possible. We can choose "Jiebizhi" at 750-1000-fold solution to spray the plant, generally once every 5-7 days. After 2-3 times, this pest can basically be completely eliminated.
2. Southern blight
Southern blight generally occurs in summer when the weather is relatively hot, so special attention must be paid at this time. This disease mainly threatens seedlings. When it occurs, some white powdery fungal growth appears on the seedlings. If left untreated for a long time, it causes the seedlings to wither and die directly, making growth impossible.
Control method: This disease is best controlled in the early stage. If the matter is delayed too long, it may become impossible to control, and everyone should note this. We can choose thiophanate-methyl wettable powder to spray the plant for control.
3. Root rot
Root rot, as the name suggests, mainly harms the roots and stems of plants. It generally appears in humid weather. In the early stage, many black lesions appear on the roots and stems, then gradually spread to the leaves, and finally cause the entire nine-joint orchid plant to rot.
Control method: When found in the early stage of disease, we can use 80% 402 antibacterial emulsifiable concentrate at 2000-fold solution for root drenching, generally once every 7-10 days. About 2 times can completely control it.
4. Soft rot
Soft rot mainly harms the leaf stalks of nine-joint orchid. In the early stage of disease, black mold-like matter appears, and as time goes on an disgusting foul odor also appears, finally causing the whole plant to rot.
Control method: This disease can only be controlled at the very beginning. If the matter is delayed too long, it basically cannot be treated. To control this disease, we can choose 50% amobam at 600-800-fold solution for root drenching treatment.
5. Leaf blight
Leaf blight, just like its name, mainly harms the leaves of nine-joint orchid. In the early stage of disease, the leaves gradually begin to turn yellow. This disease must be discovered in time, because it spreads extremely quickly and can cause the whole plant to die of disease within a few days.
Control method: When this disease appears, we can use 50% carbendazim wettable powder at 1000-fold solution for spray control, generally spraying once about every 10 days. After 2-3 times, this disease can basically be completely cleared.
As for the question of what to do when nine-joint orchid has bugs, friends who have read the above should already have an answer. In fact, pests and diseases are mainly caused by improper care. In the article on nine-joint orchid cultivation methods, there is a detailed explanation of care techniques, which everyone can refer to. The editor's introduction to pest and disease control for nine-joint orchid ends here, and I hope it can help everyone.