Rhododendrons and moon flowers are gorgeous and easy to raise, and it is very suitable for placing several pots at home. When summer comes, your rhododendrons may have a strange phenomenon, with many yellow-white dots on the surface of the leaves, and the back of the leaves is full of densely packed small black spots.
This situation shows that the flowers and grass have grown military insects, carefully turn the leaves, you can see the insects like small flies hiding on the back of the leaves, that is, the military insects, it will suck the sap of the flowers and grasses, and eventually lead to the death of the flowers and grasses.
How to kill military insects? Imidacloprid is very effective, basically a spray can be killed, imidacloprid can also control aphids. Dilute imidacloprid 800 to 1000 times and spray the leaves of rhododendrons on both sides. Spray well, dilute some of the remaining insecticides, and irrigate the roots of the rhododendrons.
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If there are more military insects, in order to completely kill and prevent military insects, you can bury a little small white medicine in the pot, 20cm pot 2 to 4 spoons. Small white medicine can also be used to kill aphids, red spiders, small black fly and other small insects, it is recommended that the flower friends who have raised rhododendrons, moon seasons and other easy to grow cordyceps and flowers are prepared.
A few days after the spray, it is necessary to carefully check the leaves and whether there are any military insects, and if there is any, it is necessary to spray the medicine again to kill. In addition, proper pruning of overly dense branches and leaves, and placing flowers in a cool and ventilated place can greatly reduce the possibility of diseases and insect pests.
If you also like to raise flowers, welcome to pay attention to Lixia Horticulture, get more knowledge of flower raising, and give Lixia a thumbs up at the end of the article!