What are the common diseases of water lilies
Here are some detailed introductions for netizens about the common diseases of water lilies and the small green plant maintenance experiences on preventing water lily diseases, keep reading!
Water lilies are perennial floating leaf aquatic herbs. They enjoy sunlight, bloom from July to October, usually opening during the day and closing at night, hence the name "sleeping lily." Water lilies grow in ponds and lakes, preferring a warm, humid, and well-ventilated growing environment. There are many diseases that water lilies can easily contract, and the following will specifically discuss the prevention and treatment methods for water lily diseases.
1. Black Spot Disease
Black spot disease mainly affects the health of water lily leaves. Initially, the leaves develop yellowish spots that fade in color, and later they become circular or irregular brown spots. Sometimes there is a yellow-green halo around the leaf edges, and black mold grows on the leaves; severe cases can cause the entire leaf to turn yellow and wither. Leaf spot disease often occurs during the rainy season, and it is necessary to strengthen cultivation management and clean up diseased leaves in a timely manner. When the disease is severe, it is necessary to change the potting soil and control the disease by spraying a 75% chlorothalonil solution diluted 600-800 times.
2. Brown Spot Disease
When infected with brown spot disease, circular spots 0.5 to 8 mm in diameter appear on the leaves, ranging from light brown to yellowish brown. In the later stages of the disease, many black mold spots appear on the leaves. Brown spot disease peaks during the rainy season in autumn, and the pathogen can overwinter on the leaves. When plant lesions are detected, it is necessary to prune the affected leaves, and in severe cases, use a 50% carbendazim solution diluted 500 times or an 80% zineb solution diluted 500-800 times for control.
3. Rot Disease
Rot disease occurs on the entire plant, starting from the root. Initially, there are no symptoms on the rootstock, but its cross-section will turn light brown. Some diseased stems may not show obvious discoloration, but the rootstock will have longitudinal wrinkles, and the leaves will appear light green; severe cases can cause leaf curling and eventually plant death. It is necessary to strengthen water and fertilizer management, remove diseased plants in a timely manner, and control the disease by spraying a 50% carbendazim wettable powder solution diluted 600 times mixed with a 75% chlorothalonil wettable powder solution diluted 600 times.
4. Anthracnose Disease
In the early stages of anthracnose disease, leaves show small brown spots, which later expand to over 10mm and become nearly circular lesions with a darker edge. When infected with anthracnose, it is necessary to prune the diseased leaves and dispose of the debris by deep burial or incineration. After removing the diseased roots, spray a 50% carbendazim wettable powder solution diluted 600 times or a 75% chlorothalonil wettable powder solution diluted 600 times for control.
The above is the full content about the common diseases of water lilies and detailed methods to prevent water lily diseases. I hope it can help you, and I also hope that everyone will come to see more green plant and flower experience knowledge!