Greenway Biotech Ferrous Sulfate

Because this formula is highly soluble and readily absorbable, you should notice a visible improvement in leaf color within a few days of application. For severe cases of iron chlorosis, you may need to repeat the treatment according to the package instructions.

This product is specifically designed for acid-loving plants like azaleas, rhododendrons, blueberries, and hydrangeas that struggle in alkaline or calcareous soils. It is not recommended for plants that prefer neutral or alkaline conditions, as it will lower the soil pH.

Both methods are effective, but they serve different purposes. Use a foliar spray for a rapid, direct correction of yellowing leaves, or apply it as a soil drench if you need to address long-term pH issues and nutrient uptake in the root zone.

Yes, ferrous sulfate is a standard, effective treatment for moss control. It works by desiccating the moss, causing it to turn black and die, while the iron and sulfur content can simultaneously help green up the surrounding grass.

This is a high-purity mineral supplement that is CDFA registered, meaning it meets strict standards for quality and composition. It is formulated to be 100% water-soluble, ensuring you are applying pure iron and sulfur without unnecessary bulk or insoluble fillers.

The 12% sulfur content is crucial because it helps lower the soil pH, creating a more acidic environment. This acidity is essential for many plants to unlock and absorb iron and other micronutrients that are otherwise 'locked' in alkaline soil.