Begonia of the four seasons is also known as begonias of the four seasons, begonias of clams, begonias of melon seeds and so on. There are many flowers, such as light red, white, etc., which bloom often every four times, and can be used for landscaping, hanging pots, indoor arrangements, etc., and are widely loved by flower lovers.
Control of begonia diseases and insect pests in all seasons:
In the hot summer, begonias are susceptible to red spiders. Causes brown spots on the leaf surface, which in severe cases can lead to yellowing and shedding of leaves, affecting the flowering of begonias. Because the red spider insect is very small and is not conducive to detection, when viewing the red spider, the leaves can be turned over to look at.
Solution: You can spray water on the ground to increase the humidity in the air to inhibit the reproduction of red spiders. When the number of red spiders is small, diseased leaves can be removed. When the number is large, it can be sprayed with 50% trithion emulsion 2000 times for spraying.
Thrips mainly breed at around 26 °C.
Solution: 10 cm above the plant, place a blue insect trap plate, lure, and lure the thrips to the blue worm trap plate.
In early October, whiteflies are most likely to cause whiteflies in high temperatures, and they multiply rapidly.
Solution: 20 cm above the plant, place a yellow insect trap plate, lure the whitefly to the yellow worm trap plate.
Spring and autumn are the peak seasons for begonia flowers and the season for aphid outbreaks.
Solution: You can soak cigarette butts in water, soak for 24 hours, and spray on the stems and leaves of the begonias.
Leaf curls mainly cause leaves to roll back and plant growth declines.
Solution: Observe the state of begonia flowers more often, and when leaf curls are found, cut off the diseased leaves in time.
It is very easy to attack when the weather is hot and humid.
Solution: At the beginning of the disease, foliar spray control can be carried out using 1000 times agricultural streptomycin.
Occurs mainly during the summer heat.
Solution: Control temperature, humidity, and light. Before the high temperature comes, foliar spraying with 1500 times of bacillus Clear wettable powder and 2500 times of agricultural streptomycin sulfate, spray once every 5 days, spray 2-3 times.
Mainly in the rhizome and the lower parts of the stem appear water wet shape markings, which will lead to softening and rotting of the rhizome.
Solution: when watering an appropriate amount, to avoid the phenomenon of water accumulation in the basin, when the stem rot occurs, stop watering, place in a place with good ventilation conditions.