IRON PLUS SOIL ACIDIFIER 3.25lb

The perfect two-in-one solution for yellowing plants in alkaline soil! This granular product supplies immediately available Iron to quickly green up yellowing leaves (chlorosis) while simultaneously providing Elemental Sulfur to slowly and permanently lower the soil pH over time, ensuring long-term nutrient availability.

• Best For:
  • Chlorosis: Treating yellowing (interveinal chlorosis) on ornamental shrubs, shade trees (especially Aspens and Pin Oaks), and lawns in high-pH regions.
  • Acid Lovers: Boosting the health and color of Rhododendrons, Azaleas, Pines, and Blue Spruce.
• Key Actionable Steps:
  • How to Apply: Apply the granules evenly around the drip line of the plant (keep away from the trunk).
  • Activation: Water thoroughly immediately after application to dissolve the iron for quick uptake and begin the slow-acting acidification process.
  • Timing: Apply in the early spring to correct chlorosis and start the acidification process. Reapply in the fall for the slow-acting sulfur to work over winter.
  • Pro Tip: While the iron greens plants quickly, use this product consistently and patiently, as the sulfur will take several months to significantly change the soil's pH.