Particular aspects provide novel insecticide/miticide/fungicide compositions, and methods for using same for safe, environmentally friendly control of insects, mites and fungal pests in, e.g., gardening and commercial growing. Preferably, the compositions comprise organic or pure ingredients. Particular embodiments comprise: a fatty acid soap base (e.g., saponified soap with retained glycerin； or fatty acid salts with glycerin)； at least one essential oil； an optional food oil； and a bicarbonate reagent, along with water. Additional embodiments comprise: a soap base, and/or glycerin or other suitable base； at least one organic or pure plant essential oil； an organic or pure food oil； and a bicarbonate reagent, along with water as diluent and carrier, and methods for using same. Further aspects provide a method for controlling mite and fungal pests with a single composition comprising, along with an aqueous carrier or diluent: a non-petroleum-based food oil； and a bicarbonate agent.
