Symptoms and Control Methods of Pests and Diseases in Bonsai Serissa and Zinnia
Serissa (Serissa japonica), a very beautiful plant, has pure-colored flowers that cluster several together at the tips of the small branches, looking truly lovely, and it is often potted at home by flower enthusiasts. Although Serissa has strong adaptability, if it is not cared for properly, it can also be troubled by pests and diseases. So what should you do when Serissa gets bugs? The following is the pest and disease control for bonsai Serissa, very detailed, so be sure to take a look~
I. When Serissa gets bugs, spray with pesticide
Generally speaking, Serissa rarely gets bugs, but if you do not follow the Serissa cultivation methods, or if you operate improperly, it will get bugs and become sick, and flower enthusiasts must be very anxious! As for what to do when Serissa gets bugs, it is actually very simple. First we determine which kind of bug it is, and then solve it accordingly. The following is the pest and disease control for Serissa, with a total of 3 pests and 2 diseases. Let us continue reading below.
II. Pest and disease control for Serissa
1. Dodder
It is neither a pest nor a disease, but a climbing herbaceous plant that parasitizes Serissa. It is understood that dodder grows very quickly, twining its vine stems around the main trunk and branches of Serissa and absorbing the nutrients from within the Serissa branches.
Absorption method: Dodder twines very tightly, and the Serissa branches will be constricted by it into strangulation marks, and its vine stems will form haustoria at the strangulation marks, thereby absorbing nutrients.
Control method: Dodder is most likely to appear in late spring and early summer. At this time we must observe carefully. Once dodder is found, remove it together with weeds and the affected parts and destroy them. For severely affected plots, deep plow every year; during the seed germination period, spray the soil with 1.5% sodium pentachlorophenate and 2% prometryn solution, which can effectively prevent dodder.
2. Aphids
Although Serissa is rarely attacked by bugs, once it is not cared for properly, aphids will appear. Symptoms of infestation: Aphids mainly harm the young leaves and stems of Serissa, parasitizing on the leaves and sucking sap. Once aphids appear, they are densely packed and look very frightening.
Control method: When aphid infestation is found, spray with dichlorvos 1200-fold aqueous solution, or kill them with tobacco leaf water: add 50 grams of tobacco leaves to 5 kg of water, and boil to make it. ⟦14 3. Snails
3. Snails
This pest generally appears in May-June, and it is the greatest harm before Serissa blooms. Symptoms of infestation: Leaves and stems will be bitten through, causing leaf drop, and in severe cases threatening the entire plant.
Control method: When this pest is found, pick it off with a toothpick, or spray with 58% Fenglei Emulsion 1500-fold solution.
4. Scale insects
One of the main pests of Serissa, it occurs mostly in May, piercing into the leaves with its mouthparts and sucking the sap from the Serissa leaves. Symptoms of infestation: Serissa leaves turn yellow and age, affecting the plant's growth vigor; in severe cases the plant will die.
Control method: After discovering scale insects, immediately spray with pesticide. You can use 40% omethoate 1000-fold solution or 50% dichlorvos 1000-fold solution, spraying once every 7-10 days, and 2-3 consecutive sprays will show results. ⟦20 5. Root rot
5. Root rot
In addition to being attacked by bugs, Serissa sometimes develops root rot, which mainly infects the base of the plant stem. The affected area becomes water-soaked, brown, and wet-rotted, and this causes the plant leaves to turn light green or gray, and finally to wilt and die.
Control method: When the above symptoms are found, you can use 12% copper abietate emulsion 600-1000-fold solution, or 50% root rot spirit 800-fold solution for root drenching and foliar spraying, spraying once every 3-5 days, and 3-4 consecutive sprays will show results.
6. Leaf blight nematode
This disease is caused by infection by the Serissa bud nematode, and mainly harms the leaves. Symptoms: Light brown small spots appear on diseased leaves, then expand. As necrotic spots on the leaves increase, very serious consequences are produced, and finally all the leaves of the whole plant wither and die, and the ornamental value is directly completely lost.
Control method: When this disease is found, promptly remove diseased residues and wild hosts, and burn them in a centralized manner to reduce the source of disease. When the disease is severe, you can apply 15% aldicarb granules in holes around the diseased plants and water them, and results will soon appear.
That is all the editor has to introduce about the pest and disease control of Serissa. I believe everyone should know what to do when they encounter Serissa getting bugs or becoming sick! Overall, Serissa is rarely troubled by pests and diseases, so as long as everyone cares for it carefully, these troublesome matters will not come knocking. Finally, may everyone's Serissa bloom beautiful flowers.
What to do when Zinnia gets bugs, pest and disease control for Zinnia / 3 pests and 3 diseases, spray with pesticide
As a plant with extremely strong ornamental value, Zinnia is potted at home by many flower enthusiasts because it is very easy to keep alive. However, once it is not cared for properly, causing pests and diseases to appear, it will seriously damage the ornamental value of Zinnia. So what should you do when Zinnia gets bugs? The following is the pest and disease control for 6 kinds of Zinnia problems. Follow the editor to learn more and take a look.
I. When Zinnia gets bugs, spray with pesticide
Although Zinnia is very easy to grow, if you do not follow the Zinnia cultivation methods, it will also get bugs and become sick, and by then flower enthusiasts must be very anxious! However, as long as prevention and control are timely, there will not be much of an impact. The following is the pest and disease control for Zinnia, with a total of 3 pests and 3 diseases. Let us continue reading below for the specific symptoms and control methods.
II. Pest and disease control for Zinnia
1. Aphids
Zinnia has strong adaptability, but it is also very prone to pests, including aphids. As one of the pests and diseases of Zinnia, aphids harm the young leaves and stems of Zinnia, parasitizing on the leaves and sucking sap.
Control method: When aphid infestation is found, you can wash the whole plant with water; when there are too many aphids, you can spray with dichlorvos 1200-fold aqueous solution, or kill them with tobacco leaf water: add 50 grams of tobacco leaves to 5 kg of water, and boil to make it.
2. Cotton bollworm
One of the pests and diseases of Zinnia, it mainly bores into and eats the flower buds of Zinnia, and damages by biting the flowers. In addition, the cotton bollworm larvae also feed on the tender tips and young leaves of Zinnia, forming holes and notches, causing headless Zinnia and affecting the normal growth of the plant.
Control method: At night, use light traps to kill adults, or spray biological pesticides such as Bt emulsion, nuclear polyhedrosis virus, Tripterygium wilfordii refined emulsion, etc.; in addition, you can also combine pinching off the growing tips and remove the young tender parts, which can eliminate large numbers of eggs and larvae. Ps: The pinching method for Zinnia was introduced in detail earlier, so it will not be repeated here.
3. Black cutworm
The black cutworm, a soil-dwelling pest, mainly harms the root and stem base and lower leaves of Zinnia, causing the plant to wither and die. This pest is most severe around late April to early May, and everyone must carry out control immediately after discovering it.
Control method: Promptly remove weeds from the chrysanthemum pot, and capture by hand; in addition, you can also spray pesticide for control, such as 90% trichlorfon 500-fold solution, and the effect is quite good.
4. White star disease
One of the diseases of Zinnia, it mainly harms the leaves. Symptoms: In the early stage, small dark brown spots appear on diseased leaves, slowly becoming lesions with dark brown edges and gray-white centers, 2-4 mm in diameter; in the later stage, Zinnia leaves curl and dry up.
Control method: When the above symptoms are found, promptly remove diseased leaves to reduce the source of disease; you can also spray 65% zineb wettable powder 500-fold, or 75% chlorothalonil wettable powder 500-800-fold for control.
5. Black spot disease
Zinnia black spot disease, one of the diseases commonly encountered by flower enthusiasts, occurs throughout the country. Symptoms: Zinnia leaves turn brown and dry up, petals shrink, and in addition, red-brown spots 2 mm-10 mm in diameter also appear on the leaves.
Control method: When diseased leaves are found, promptly remove and burn them to reduce the source of disease. When the disease is severe, spray 50% zineb or mancozeb 5000-fold solution for control. Note: When spraying, pay special attention to spraying the leaf undersides evenly.
6. Mosaic disease
One of the pests and diseases of Zinnia. After contracting this disease, Zinnia will produce ring spots, sometimes latent symptoms (observed but not treated). In addition, the plant grows and develops slowly and looks short overall, affecting its ornamental value.
Control method: When the above symptoms are found, spray 7.5% Keduling aqueous solution 600-fold or 3.85% Bingdubike wettable powder 700-fold for control, and alternating sprays give better results.
Overall, Zinnia is very easy to grow, but if you are not careful it can still be troubled by pests and diseases~ So to avoid unnecessary trouble, everyone should care for it carefully. That is all the editor has to introduce about the pest and disease control of Zinnia. I believe everyone should know what to do when they encounter Zinnia getting bugs or becoming sick!
What to do when glass begonia gets bugs, pest and disease control for glass begonia / 3 pests and 3 diseases
As a common ornamental plant, glass begonia is not difficult to cultivate and looks beautiful, so it is kept at home by many people. But because there are many novice growers, they often make mistakes during the cultivation process, resulting in the plant getting bugs and becoming sick. So what should you do when glass begonia gets bugs? In this regard, the editor has summarized 5 common pests and diseases of glass begonia. Let us take a look together!
I. When glass begonia gets bugs, spray with pesticide
During the growth process of glass begonia, the plant will inevitably get bugs and become sick. The main diseases include root rot and stem rot, and the main pests are leaf roller moths, aphids, and red spider mites. Their appearance will all affect the growth of glass begonia. So once discovered, pesticide should be sprayed immediately for control. As for what pesticide to spray, there is a detailed introduction in the pest and disease control for glass begonia. Let us continue reading below for the specifics.
II. Pest and disease control methods for glass begonia
1. Leaf roller moth
Among the pests that harm glass begonia, the most common is certainly the leaf roller moth. This pest is small in size, and its larvae specifically bite and eat the new buds, young leaves, and flower buds of the plant, leaving only the epidermis in a net-like pattern and causing the leaves to roll lengthwise. Moreover, the leaf roller moth hides within the leaves and continuously harms the plant, and if you are slightly careless it will affect the growth and flowering of glass begonia.
Control method: When there are few leaf roller moths, you can manually remove the rolled leaves and crush the insects to death; in addition, when leaf roller moth larvae are found, you can spray 75% phoxim 1000-fold solution at night; when adults are found, you can use sugar-vinegar liquid (made with 5 parts sugar, 5 parts wine, and 80 parts water) to trap and kill them.
2. Red spider mites
A type of mite, it is also one of the common pests of glass begonia. This pest often occurs when ventilation is poor, and will harm the top of the plant, causing the top of glass begonia to turn red-brown and have spider webs, affecting the plant's growth and development.
Control method: After discovering the pest, you can treat it with decis, or use 10% fenbutatin oxide-pyridaben emulsion 1000-fold solution for spraying and killing.
3. Aphids
Aphids are the most common pest of indoor potted plants, and they also harm the health of glass begonia. This pest mainly harms leaves and buds, sucking large amounts of sap, causing the plant to lose a large amount of nutrients and appear withered.
Control method: When there are few aphids, brush them off with a small brush and bury them in the potting soil; when there are many scale insects, spray 40% omethoate 1000-fold solution or 50% dichlorvos 1000-fold solution for control, spraying once every 7-10 days, and 2-3 consecutive sprays will show results.
4. Root rot
One of the most common diseases of glass begonia, the main part it harms is the root and stem. When the disease occurs, the root and stem of glass begonia become soft and rot, and in severe cases the plant dies.
Control method: Take the plant out of the pot, cut off the injured parts, then apply fungicide to the wounds, let them dry in a cool place, and replant.
5. Stem rot
A disease that harms the stem of glass begonia, it generally spreads through splashing water, and is prone to occur when moisture remains for a long time. Symptoms: The stem or stem base of glass begonia rots, and causes the whole plant to wither and die rapidly.
Control method: When the above symptoms are found, spray 27% copper hydroxide suspension 600-fold solution; when the disease is severe, when spraying you can also add some Qingkulike or hymexazol, spraying about once every 10 days, and 2 to 3 sprays are enough.
6. Damping-off
Damping-off is a disease that exists in many plants, and glass begonia is no exception. This disease mainly harms the stem base of the plant and the leaves close to the soil surface. When it occurs, many dark spots appear on the stem base near the soil surface, and over time they gradually spread, finally causing the plant to wither.
Control method: When controlling damping-off, we can use 50% damping-off spirit wettable powder 1000-fold solution to drench the roots of diseased plants, generally once every 10-15 days, and after 2-3 times they can recover.
That is all the editor has to introduce about the pest and disease control of glass begonia. I believe everyone should know what to do when they encounter glass begonia getting bugs or becoming sick! If you are slightly careless, glass begonia is easily troubled by pests and diseases, so everyone must care for it carefully. Only in this way will bugs not come knocking. Finally, may everyone's glass begonia bloom beautiful flowers~