Abstract: The present invention provides a system and method to accurately and safely allow the application of nutritional elements to the foliage of vegetation. The accuracy and safety are the result of the nutritional elements being pre-mixed and applied via a pressurized canister, which produces a foam-based delivery system. The foam is highly visible, dissipates rapidly, and is inert except for the nutrients which it contains (e.g., nitrogen, phosphorus, potassium, magnesium, calcium, and others including all of the micro-nutrients that are essential for plant growth). The nutrient content of the foam, for specific uses of the invention, is necessarily variable depending on the type and condition of the vegetation needing such an application.