Q.Begginer Struggling With Powdery Mildew And No Fruit Production
I wanted to try out planting, so i bought tomato, pepper and strawberry seedlings. Due to me living in a apartment, I had to plant them on my balcony. All my plants grew nicely, but then I had a aphid infestation. Dealt with that using a insecticide, and now my tomato and pepper are infected with powdery mildew. Tried spraying with baking soda but to no avail. My next problem is that my tomato grows flowers, but doesn’t produce fruit. All the flowers just dry off.

Certified GKH Gardening Expert
Here are two articles with tips on how to deal with powdery mildew on your plants, plus an article about why tomatoes don't produce:
https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm
https://www.gardeningknowhow.com/garden-how-to/info/what-is-copper-fungicide.htm
https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-blossoms-no-tomatoes.htm