Jack's Classic Petunia FeED 20-6-22 is designed for the plants that don't take up much iron through the roots like petunia, bacopa, nemesia, pansy, calibrachoa, vinca, and others more. It contains an enriched micro-nutrient package that produces riotous green plants in any growing condition they are in. Also effective in hanging baskets and containers that are watered often. It contains extra iron for the plants to prevent yellow tips and also extra magnesium to keep the lower leaves green.??