§ 14536 Fertilizer Nutrient Labeling Requirements

• •A guaranteed analysis tells the lowest amount of nutrients a product promises.
• •It can include big nutrients (like nitrogen) or tiny ones (like iron).
• •Manufacturers must list these minimum percentages on their labels.

A bag of fertilizer says it has a guaranteed analysis of 10% nitrogen, 5% phosphorus, and 2% potassium.

The numbers on the bag are the minimum percentages of those nutrients that the fertilizer must contain, as required by this law.