Abstract: A method of stimulating growth and environmental stress resistance in a target plant is disclosed. An illustrative embodiment of the method includes providing a homeopathic growth stimulant, providing a dilution medium, diluting the homeopathic growth stimulant in the dilution medium to a level that molecules of the homeopathic growth stimulant are cloistered within a group of dilution medium molecules and are thereby rendered nontoxic and yet detectable to the plant to signal activation of defenses in the plant, providing a delivery medium comprising plant nutrients, combining the dilution medium and dissolved homeopathic growth stimulant with the delivery medium to form a plant enhancement substance and placing the plant enhancement substance in proximity to and into constituent communication with a target plant. A substance for promoting growth in a target plant is also disclosed.