The leaves of red hanging begonia have mildew on them. It is not producing the flowers it should. Is there a solution I can use to restore tge plant back to health.
Hello, sorry to hear about the problem with your begonia. You don’t mention what kind of begonia you have but tuberous begonias are often sold as hanging plants. Overcrowding, lack of good air circulation and high humidity can cause powdery mildew in tuberous begonias. Keeping your plant healthy with regular watering, appropriate fertilizing, increasing air circulation and removing infected plant parts should also help control the powdery mildew. Powdery mildew may inhibit flowering.
This question has been addressed in a previous ASK question about begonias. A link is provided here: Tuberous Begonia Problem.
Another ASK answer regarding powdery mildew on melon seedlings has helpful information regarding good plant care and fungicides in Ontario. A reputable garden centre will be able to discuss the fungicides available. Please be aware that fungicides do not cure existing fungal diseases but are best used as prevention.
There are other diseases caused by fungi or bacteria that can affect begonias. Please see this link for descriptions. A great source of information is the website of the American Begonia Society.
Best of luck with your begonia!