Regarding fungicide applications, it depends on the severity of the rust and mildew. Generally, it's recommended to apply fungicides preventatively before the disease appears, or as soon as symptoms are noticed. Follow the instructions on the fungicide label for the recommended application frequency and amount. In some cases, multiple applications may be necessary, especially if the disease is severe.

It's important to note that even with fungicide applications, it's still important to practice good cultural practices such as adequate spacing, proper watering, and keeping the area clean of plant debris to help prevent disease from spreading.
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