Xiao Xia Mi: Who can help me look at the small white beans on the leaves and branches of gardenia? then what
Enjoy it: when you are sick, when you are young, cut the sick leaves and throw them in the trash can. If you take too much, take medicine.
Xiao Xia Meade: What medicine should I take? Quite a lot. There are more or less old leaves.
Enjoy it: what medicine do you have now? If yes, take the diseased leaves to the local pesticide store to buy medicine.
The conversation is over!
How does gardenia prevent insects?
There are aphids, flea beetles and moth larvae that harm gardenia. The first two can be controlled by dimethoate and trichlorfon, and the latter can be controlled by 666 powder or captured manually. Among them, red spiders and scale insects are more common.
First of all, Starscream
Red spider mainly harms the leaves of gardenia. Spiders parasitize gardenia, mainly feed on leaf juice and gather on the back of leaves. The leaves of the plants invaded by the red spider are yellow and weak. In addition, red spiders breed faster in high, dry and warm environments.
Preventive and control measures
1, keep the environment suitable for humidity, and do not create breeding conditions for red spiders. When the air is dry, spray it frequently to reduce the temperature and increase the humidity.
When you find the red spider, wash it with clear water immediately to destroy it.
3. Spraying yellow tobacco leaves or residual cigarette butts with water at home has obvious contact killing effect.
Second, scale insects
Scale insects are pests that harm the branches and leaves of gardenia. Although they are small in size, their lethality should not be underestimated. Scale insects feed on plant juices. In light cases, the leaves fall off, and the plant grows weak. In heavy cases, the whole plant dies, which has a great influence on the growth and development of Gardenia.
Preventive and control measures
Scale insects are very small and often get together to secrete wax, which looks like a pile of white wax powder. Just pick it off with a stick and trample it to death. Or spray 80% dichlorvos 1000 times to kill.
Spraying 0.2-0.5 degree sulfur mixture to kill eggs in spring. This method has a great effect on preventing the occurrence of pests.