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What are the control methods for scale insects on osmanthus?
Adults and nymphs often settle on osmanthus branches, suck sap, causing branches and leaves to wither, and in severe cases the whole plant dies. They often secrete large amounts of honeydew, which leads to sooty mold. Leaves and stems become covered with a black, sticky substance, hindering photosynthesis and affecting ornamental value. The main species are the cottony cushion scale and the white peach scale. Control methods: strictly prohibit the use of seedlings carrying the pest...
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How to grow osmanthus in an apartment building? Remember these care methods
In winter, osmanthus grows slowly and is in a relatively dormant period, but its internal tissues are growing vigorously, mainly carrying out flower bud differentiation, so that when the temperature rises in spring, it can produce flower buds and bloom. Therefore, the focus of winter care is to protect the plant and ensure that flower bud differentiation proceeds smoothly. The specific care techniques are as follows: 1. ...
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How to prevent and control Osmanthus brown spot disease? These methods you need to know
Osmanthus brown spot disease is a common disease of osmanthus, caused by infection with fungi of the subphylum Deuteromycotina. It occurs in both field-planted and potted osmanthus plants. When it strikes, mild cases affect the ornamental effect, while severe cases cause plant death. Symptoms mostly occur on leaves, mostly spreading from the leaf tip and leaf margin toward the entire leaf. In the early stage, the lesions are light...
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What are the control methods for Osmanthus brown spot disease?
Brief introduction Osmanthus brown spot disease is a very common disease; in severe cases it causes the whole plant to drop its leaves, affecting flowering and ornamental value. It has long been reported in countries such as the UK, the US and Japan. It also occurs frequently in Shanghai, Nanjing, Hangzhou, Jinan, Beijing, Fuzhou, Guilin, Xiamen, Guangzhou, Taiwan, China and other provinces and cities in China. Symptoms The pathogen mainly infects the leaves...
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How to Propagate Osmanthus? Detailed Guide to Common Propagation Methods and Techniques
When cultivating osmanthus, if pruning and shaping are neglected over a long period, the tree will grow deformed. For such trees, targeted pruning should be carried out. (1) For plants that have grown very tall with sparse branches and leaves on the lower part, the upper 2/3 or 3/4 of the main trunk can be cut off to encourage the lower trunk to send out new branches. In the following year, if water sprouts and mispositioned...
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Detailed Explanation of Seed Sowing and Seedling Raising Methods and Technical Points for Osmanthus Trees
How to sow seeds and raise seedlings of osmanthus trees? Please advise. Osmanthus is generally propagated by cuttings, while single-trunk osmanthus is mostly propagated by sowing. The following is an introduction: 1. Seed collection. Osmanthus flowers from September to October, and the fruit matures from late March to late April of the following year. When the fruit enters the maturity stage and the peel gradually changes from green to purple-black, it can be collected...
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Detailed Explanation of Osmanthus Tree Cutting Propagation Methods and Techniques
The larvae spin silk to bind leaves and bark fragments together to build a protective case, feed on the leaf mesophyll, and leave the veins behind. Damaged leaves become perforated; in severe cases, all the leaves on the entire tree are eaten bare, and the bark can also be gnawed. This severely affects the growth vigor of the osmanthus tree. Control methods: remove the protective cases to reduce the pest source and eliminate overwintering larvae. Protect natural enemies such as the umbrella-skirt tachinid fly...
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What methods are there to make osmanthus trees bloom more?
What methods can make osmanthus trees bloom more? Please give guidance on the methods. In addition to applying more phosphorus and potassium fertilizer appropriately throughout the entire growth period, moving the plant indoors to overwinter above 0°C in late autumn, and keeping the potting soil slightly moist, to encourage more blooming and fragrant flowers, the following four points should also be handled well. Choose slightly acidic soil for cultivation...
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How to grow an osmanthus tree so it blooms? A complete guide to flower-promoting methods
How do you get an osmanthus tree to bloom? What methods are effective when osmanthus does not bloom. The reasons are excess nitrogen fertilizer, insufficient phosphorus and potassium fertilizer and a lack of trace elements; second, insufficient light; third, improper pruning and shaping. The above are also common problems of potted osmanthus in the north. At present it is exactly the stage of flower bud formation, so phosphorus and potassium should be applied immediately...
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Common Diseases and Control Methods for Osmanthus Tree Cultivation in Guangxi
What diseases should be prevented in osmanthus tree cultivation in Guangxi? What methods can be used to control them? Osmanthus is an excellent landscape tree species that combines greening, beautification and fragrance, with both ornamental and practical value. It is also a traditional evergreen aromatic plant in China, widely cultivated in many regions. But in recent years, the damage caused by osmanthus pests and diseases has increased, leading to...
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