Fortune Telling Collection - Ziwei fortune-telling - Causes and control of yellow leaves of Osmunda japonica Thunb.
Causes and control of yellow leaves of Osmunda japonica Thunb.
Solution: Don't worry about this situation. Continue to do a good job of normal and reasonable maintenance management of Osmunda japonica, and it will be safe.
Reason 2: Lagerstroemia indica has strong drought resistance. The soil moisture caused by excessive water will make it difficult for roots to absorb enough oxygen and weaken, so that nutrients cannot be transported to leaves, resulting in yellow flowers on leaves.
Solution: We should always adhere to the principle of "no watering", especially in rainy season, and take effective drainage measures to avoid root rot.
Reason 3: Powdery mildew is a disease that most plants will suffer during their growth, and Lagerstroemia indica is also an important infection object. The leaves of Lagerstroemia indica damaged by powdery mildew will wither gradually and eventually fall off, which seriously affects the growth of plants and the normal ornamental effect of Lagerstroemia indica.
Solution: First of all, do a good job in daily maintenance. Healthy growth can improve the disease resistance of plants. In order to prevent the beginning of the growth period, 80% zineb wettable powder 500 times, 70% thiophanate-methyl 1000 times, 20% triadimefon EC 1500 times and 50% carbendazim wettable powder 8000 times can be sprayed.
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