What are the diseases and pests of Poinsettia?
This article provides information on the diseases and pests that affect Poinsettia and offers some tips on how to deal with common diseases and pests. Let's follow the editor to explore the details!
Poinsettia is an auspicious flowering plant, especially during the Spring Festival holidays when it blooms, symbolizing universal celebration and the joy of renewal. Most families raise Poinsettia. So, what should we do about the diseases and pests of Poinsettia? The diseases include gray mold, root rot, and leaf spot; the pests include whiteflies, spider mites, and thrips. Let's discuss the prevention and control methods for Poinsettia diseases and pests.
【Ⅰ. Poinsettia Pests】
<1. Whiteflies>
Whiteflies prefer to grow in dense foliage and shady environments. They use their刺吸式 mouthparts on the underside of leaves to absorb sap. This usually occurs from September to November, so it's best to start prevention in September. Spraying with pesticides can be done early in the morning. When the number of insects is small, simply remove the leaves and then spray with a fungicide.
<2. Red Spider Mites>
Red spider mites are common pests, with high incidence in spring and autumn. They like to reside on the underside of old leaves, causing the plant to wither. Therefore, in maintenance, if eggs are found, remove the leaves and move the plant to a sunny area. Use Mitac 2000 times solution or 3000 times solution of damalin spray, applying once a week for 4 weeks.
<3. Thrips>
Thrips can damage young leaves and new shoots, leading to poor plant development. Leaves show white or brown streaks, twisted and deformed, and flowers are also deformed. Use 1200 times solution of Orchid Joy for prevention, or spray with 1000 times solution of Abamectin, every 3 to 5 days, until completely eliminated.
【Ⅱ. Poinsettia Diseases】
<1. Gray Mold>
Gray mold occurs during the wet winter season, with brown spots appearing on leaves, branches, and inflorescences. Therefore, when this disease is detected in winter, it's important to increase indoor temperature, enhance light penetration, and reduce humidity. Use Klout 800 times solution spray, but only use it after the plant has rooted.
<2. Root Rot>
Root rot occurs in high temperatures. Initially, light brown spots appear on the roots, and as the condition worsens, the plant gradually wilts until death. When the disease occurs, spray the base of the peanut stem with a 50% wettable powder of carbendazim 1000 times solution and change the soil promptly. Regularly loosen the soil to ensure the roots have adequate oxygen.
<3. Leaf Spot Disease>
Leaf spot disease often occurs in spring and summer, usually starting with old leaves. Irregular lesions appear on the leaves, causing them to twist and dry. When lesions are found, they should be removed and the dead leaves cleared. In severe cases, use a 1000 times solution of carbendazim, spraying every 5-7 days until completely eliminated.
<Conclusion>
The above shares the introduction of the diseases and pests of Poinsettia and how to understand and solve the common diseases and pests, for everyone to learn and understand!