Aspirin is a remedy for fungal plant problems (black spot, powdery mildew, and rust are a terrible trio of fungi). Dissolve two uncoated aspirin tablets milligrams each) in 1 quart of water and use as a foliar spray to thwart these diseases.
Gardening Ideas: Cinnamon Makes a Great Rooting Hormone Substitute! (All Things Plants)Use cinnamon as a substitute for rooting hormone. It also kills fungus and bacteria at the same time. I will never buy Rootone again : )