How to treat powdery mildew on Rieger begonias
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How to treat powdery mildew on Rieger begonias
When Rieger begonias are infected with powdery mildew, you can make your own medicine to spray for treatment. Crush 50 grams of scallion and soak it in 50 grams of water for 12 hours. After filtering, spray it on the plant several times a day, and it will be fine after three to four days. Alternatively, dilute the rice vinegar solution 150-200 times and spray once a week, for three to four times. In addition, you can also purchase special medications. For example, use fenbufen or carbendazim solution according to the instructions.
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