What are the Pests of四季海棠 (Begonia semperflorens)
A detailed introduction about the pests of Begonia semperflorens and the methods for preventing and controlling diseases and pests in green plant maintenance. It's a very useful tip worth collecting!
Begonia semperflorens is also known as四季秋海棠, Clamshell Begonia, Melon Seed Begonia, etc. It has a variety of colors, including light red, white, etc., and blooms all year round. It can be used for landscaping, hanging baskets, indoor decoration, etc., and is widely loved by flower enthusiasts.
Prevention and Control of Diseases and Pests of Begonia semperflorens:
1. Red Spider Mites
In hot summers, Begonia semperflorens is susceptible to red spider mite infestations. This can cause brown spots on the leaves, and in severe cases, lead to yellowing and falling of the leaves, affecting the blooming of the begonias. Since red spider mites are very small and not easy to detect, you can check the undersides of the leaves for them.
Solution: You can spray water on the ground to increase the humidity in the air, thereby inhibiting the reproduction of red spider mites. When the number of mites is small, you can remove the affected leaves. When the number is large, you can spray 50% trithion emulsion 2000 times to kill them.
2. Thrips
Thrips mainly reproduce at around 26℃.
Solution: You can place blue insect traps 10 cm above the plants to attract thrips to the blue boards.
3. Whiteflies
Whiteflies are most likely to occur in high temperatures at the beginning of October and reproduce rapidly.
Solution: You can place yellow insect traps 20 cm above the plants to attract whiteflies to the yellow boards.
4. Aphids
Spring and autumn are the peak growth seasons for begonias, and also the season when aphids爆发 (explode).
Solution: You can soak cigarette butts in water for 24 hours and spray the resulting solution on the stems and leaves of Begonia semperflorens.
5. Leaf Rolling Insects
Leaf rolling insects mainly cause leaves to curl and the plant to weaken.
Solution: Observe the condition of the begonia flowers frequently, and when leaf rolling insects are found, promptly cut off the affected leaves.
6. Soft Rot Disease
It is highly likely to occur when the weather is hot and humid.
Solution: In the early stages of the disease, you can use 1000 times the strength of agricultural streptomycin for foliar spray prevention and control.
7. Leaf Spot Disease
It mainly occurs in the high temperatures of summer.
Solution: Control the temperature, humidity, and light. Before the high temperatures arrive, spray the leaves with wettable powder of carbendazim 1500 times and agricultural streptomycin 2500 times, spraying once every 5 days for 2-3 times.
8. Stem Rot Disease
It mainly appears as wet-shaped patterns on the lower parts of the stem and rhizome, leading to the softening and rotting of the rhizome.
Solution: Water moderately to avoid waterlogging in the pot. When stem rot occurs, stop watering and place the plant in a well-ventilated area.
The above sharing about the pests of Begonia semperflorens and the specific introduction of the methods for preventing and controlling diseases and pests are for netizens to refer to and learn from.