When raising sedum succulents such as longevity flowers, you will find a small white insect that burrows into the stalks and leaves of longevity flowers to eat, and can seriously gnaw all the mesophyll, leaving only two thin layers of skin, or hollow out the stems, causing the stalks to break, which is still very harmful to the longevity flowers and sedum succulents.
The heart worm of the longevity flower is actually the larvae of the gray butterfly, the gray butterfly is a kind of gray butterfly, a small black and gray butterfly-like bug, which may dance around your longevity flower, and it is time to pay attention, they are looking for a suitable host for their children. The gray butterfly will lay its eggs on the leaves or young stems of longevity flowers, and after the eggs hatch into larvae, they will burrow into the leaves or young stems to eat the mesophyll, and as the insects gradually grow up, the amount of food will continue to increase, and you may not pay attention to it for a few days, and the leaves will be hollowed out. I once had a pot of longevity flowers placed on the periphery of the trellis, and I didn't look closely at it, and when I found it, the leaves were all hollowed out. So, how to control the heart worm of longevity flowers?
1.Pharmaceutical prevention and control: When it is found that there is a gray butterfly flying around, every 2-3 days, spray for prevention, and only once after 7-10 days. Pyrethroid pesticides can be used, such as cypermethrin, etc., the eggs have just hatched larvae are the most sensitive to the drug, the best treatment, the most suitable time for prevention and control is that the eggs have just hatched into larvae, and have not yet drilled into the leaves or stems, and so the insects have drilled into it and grown up, and the control effect is not ideal.
2.Hand scratching: Carefully observe the plant, leaves or young stems and find small white eggs, remove them. The leaves were found to be abnormal, and the small bugs inside were strangled to death. Catching insects by hand is too eye-consuming and labor-intensive, and you may not be able to take care of it if you raise too much.
3.Cover with nylon net: You can place the longevity flower pot in a centralized place and cover it with a layer of white nylon net to prevent the adults of the gray butterfly from coming in to lay eggs. If you don't give birth to a person, you will be cheering for the graduate school entrance examination, and there will be no small insects to infest the eggs.