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.
DIY Secret Lawn Tonic Recipe From Golf Course Groundskeeper - From Tim Heffron, a former groundskeeper at a golf course. All you need are five common household ingredients and a hose-end sprayer. Seems great for Spring lawn starter.
Got Stones? Creative, Easy and Artsy Ways to Use Rocks in the Garden