A method for treating diseased plants, such as turf and trees, includes mixing a quantity of a plant remediation composition with water and applying the plant remediation composition to the diseased plants. The plant remediation composition may include from about 30 to about 50 volume percent of a potassium silicate, from about 0.25 to about 2.0 volume percent of a surfactant, from about 0.25 to about 2.0 volume percent of a polyol, and from about 46 to about 69.5 volume percent water. The plant remediation composition may be used to treat plant molds, bacteria and fungi, such as Anthracnose, Fairy Ring, Brown Patch, Dollar Spot, and Snow Mold, and may also be used to prevent and remediate insect infestations.