Hibiscus Common Diseases and Pests
This article introduces the hibiscus section of the Flower Clinic, discussing common diseases and pests of hibiscus. Let's take a look together!
I. Hibiscus Brown Spot Disease: Symptoms: Mainly affects the leaves, with polygonal dark brown spots, 3-10mm in size. When the humidity is high, the back of the leaves may have dark brown fuzzy material, which is the pathogen's conidiophores and conidia. Lesions are rare, with the back of the leaves showing diffused patches, sometimes merging.
Control Methods:
1. Careful maintenance, reasonable fertilization, and appropriate addition of organic fertilizers.
2. At the end of autumn, thoroughly remove diseased leaves and branches, and集中ly bury or burn them.
3. In the early stage of the disease, spray 50% methyl thiophanate-methyl 800 times solution or 50% carbendazim 500 times solution, about every 10 days, for 2-3 consecutive times.
II. White-Spotted Golden Beetle: Also known as "Jing Ke Lang," it harms hibiscus, roses, daylilies, etc., by the adult beetles eating the tender buds, leaves, flowers, and flower buds.
Control Methods:
1. Manually catch the adult beetles.
2. Larvae are concentrated in rotten dung piles near the flower beds, etc. Before June, when the adults have not yet eclosed, turn the soil to remove the larvae and pupae.
3. When the adults are most harmful, spray 40% omethoate emulsion 1000 times solution for control.
That's all for the specific content of common diseases and pests of hibiscus. If it can help you, remember to visit the website often!