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What to Do About Black Spots on Carnation Leaves? Causes and Control Methods
There are two main reasons why carnations develop this problem: one is disease, and the other is a watering mistake. The way to deal with the former is to remove the diseased leaves and spray medication for treatment, while the way to deal with the latter is to pick off the leaves that have developed black spots.
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Orchid pest and disease identification from pictures and control methods (Part 3)
Orchid pest and disease special topic: diagnosing from pictures, ring spot disease + anthracnose (Colletotrichum). Routine preventive spraying: pesticide name: 77% Kocide wettable powder; ...
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Pest and Disease Control Methods and Technical Key Points for Verbena tenuisecta
Verbena tenuisecta is a flower very much loved by gardening friends. Today I want to introduce to everyone how to handle it when it gets sick. First, you need to identify what disease it has. If it is leaf spot disease, cut off the diseased leaves, spray with medication, and increase the application of P and K fertilizers; if it is gray mold, cut off the diseased flowers together with their leaves and destroy them, then spray with medication; if it is black-legged thrips, you can directly spray with medication to kill them.
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What to Do When a Rubber Plant Develops Black Spots? Causes and Control Methods
Things can go wrong as a rubber plant grows, for example it may develop black spots. In this case, the first thing to do is determine the cause. If it is anthracnose, the spots start out brownish-green and gradually darken; at this point we should cut off the diseased branches and leaves and treat it with anthracnose thiram or zineb. If it is gray spot disease, the spots are black on the outside and white on the inside; in this case we need to cut off the diseased leaves and treat it with carbendazim.
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A Detailed Guide to Common Pests and Diseases of Oriental Lilies and Their Control Methods
It originated in the Himalayan region, and later it was grown quite widely in China. Because of its appearance, it is a very popular variety. However, if it suffers from pests and diseases, it will not look so beautiful. So, what pests and diseases does it have? How exactly do you prevent and control them?
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Common Pests and Diseases of the Radermachera hainanensis and Their Control Methods
It is also called the Hainan bean tree (Radermachera hainanensis). Its blooms are very large, very fragrant, and very showy, golden yellow in color, looking absolutely beautiful. Its ornamental value is extremely high, and it is planted in many gardens. If it encounters pest or disease damage during its growth and development, how should it be dealt with?
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Characteristics and Control Methods of Spider Mite Disease in Orchids
Spider mites, also known as mites, come in many species. Take the Schizotetranychus shi species as an example: it is a common type of spider mite that damages orchids and other flowers. Its mouthparts attach to the underside of leaves, piercing through the leaf epidermis and spongy tissue layer into the leaf tissue, sucking the chloroplasts and cell contents of the palisade layer cells. It first damages the lower leaves, then gradually...
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Symptoms, Characteristics, and Control Methods of Orchid Aphid Infestation
Many aphids (such as the green peach aphid, cotton aphid, etc.) can harm orchids. Aphids mainly damage tender leaves, buds, flower buds, and other young organs, piercing plant tissues with their piercing-sucking mouthparts and absorbing large amounts of sap nutrients, causing nutritional deficiency in the plant. Taking the green peach aphid as an example: it is distributed throughout China. The green peach aphid produces 20 to 30 generations per year, and...
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