What are the different types of garden fungus that can affect plants and how can they be identified and treated effectively?

There are several types of garden fungus that can affect plants, such as powdery mildew, rust, and blight. These can be identified by their characteristic symptoms, such as white powdery spots, orange or brown spots, or dark lesions on leaves and stems. To treat them effectively, it is important to remove and destroy infected plant parts, improve air circulation, and use fungicides as needed.