What are the diseases and pests of orchids
The core content of this article: Learn about the diseases and pests of orchids and the experience of green plant maintenance in terms of common pests and control methods of orchids, let's understand together.
Orchids are relatively common flowering plants in life, and they also have high ornamental value, loved by most people. However, many people want to know what diseases and pests orchids have because people often encounter diseases and pests during the breeding process, which can cause the plant to wither. If not dealt with in time, it can lead to the death of the plant. Next, let's follow the editor to understand the common pests and control methods of orchids.
【One, What are the diseases and pests of orchids】
<1. Anthracnose>
This is the most common disease of orchids. In the early stages of the disease, it causes small black spots on the plant, which then continue to expand until the leaves of the plant form irregular disease patterns. In severe cases, the center of the lesion may also show anthracnose, thus affecting the normal growth of the plant.
<2. Scale insects>
Almost all plants can be infected with this pest, especially in the summer when the weather is more severe. If the indoor air is not circulating, the plant is more likely to develop scale insects. Moreover, scale insects reproduce very quickly, which can cause the entire plant to die if severe.
<3. Nematode disease>
Nematodes parasitize the roots of orchids, causing root rot, poor growth of above-ground leaves, leaf discoloration, yellowing, and even plant wilt. Nematode damage causes a large number of wounds and can lead to infection by other soil-borne pathogens, causing the plant to become diseased and accelerating plant death.
<4. Sclerotinia disease>
What are the diseases and pests of orchids
When watering is too wet or ventilation is poor, the disease is most severe, especially for young seedlings that have just been planted. Infected areas will develop brown spots, which can quickly expand in a high-humidity and high-temperature environment, eventually presenting black-brown spots. If orchid enthusiasts encounter this situation during cultivation and do not treat it in time, it can lead to the death of the entire plant.
【Two, Common pests and control methods of orchids】
<1. Pungent vegetables>
Pungent vegetables have their own distinctive odors, which can act as insecticides and fungicides. Common pungent vegetables used at home include scallions, garlic, chives, ginger, and onions. Take an appropriate amount of pungent vegetables, mash them into juice, dilute with a little water, and spray directly on the orchid plant. This can treat aphids, spider mites, scale insects, and gray mold disease.
<2. Topical ointment application method>
For local diseases like black spot disease in orchids, if you don't want to remove the entire leaf, you can use the topical ointment application method. Specifically, mix the thiophanate-methyl powder with water to form a paste and apply it to the affected area. Remove and reapply every week to maximize the suppression of disease progression. Orchid enthusiasts might want to try this method.
<3. Cigarette butts for pest control>