Ferrous Sulfate Fertilizer: Benefits and Applications Ferrous sulfate, also known as iron(II) sulfate, is a widely used fertilizer that provides essential iron to plants, particularly in iron-deficient soils. It plays a crucial role in plant health, aiding in chlorophyll production, enzyme function, and overall growth. This inorganic compound is highly soluble, making it an efficient source of readily available iron for crops, turfgrass, and ornamental plants. Key Benefits 1. Corrects Iron Deficiency (Chlorosis) – Ferrous sulfate effectively treats iron chlorosis, a condition where leaves turn yellow due to insufficient iron, while veins remain green. This is common in alkaline or high-pH soils where iron becomes less available to plants. 2. Enhances Photosynthesis – Iron is a core component of chlorophyll, the pigment responsible for photosynthesis. Applying ferrous sulfate ensures plants can produce energy efficiently, leading to healthier foliage and improved yields. 3. Improves Soil Structure – In addition to supplying iron, ferrous sulfate can help lower soil pH slightly, making it beneficial for acid-loving plants like azaleas, blueberries, and hydrangeas. 4. Cost-Effective & Fast-Acting – Compared to chelated iron fertilizers, ferrous sulfate is more economical and provides rapid results, often visible within days of application. 5. Versatile Application Methods – It can be applied as a foliar spray, soil amendment, or dissolved in irrigation systems, offering flexibility based on crop needs. Usage Guidelines - Soil Application: Typically applied at 1-2 lbs per 100 sq ft, mixed into the soil or watered in. - Foliar Spray: A diluted solution (0.5-1%) is sprayed on leaves for quick iron absorption. - Frequency: Reapplication may be needed, especially in high-pH soils or during peak growing seasons. Precautions - Overuse can lead to iron toxicity or excessive soil acidification. Conduct a soil test before application. - Avoid applying in hot, dry conditions to prevent leaf burn. - Store in a dry place to prevent oxidation and clumping. Conclusion Ferrous sulfate is a practical and effective solution for iron deficiency in plants, promoting vigorous growth and vibrant foliage. Its affordability and rapid action make it a preferred choice for farmers, gardeners, and landscapers seeking to improve plant health and productivity. Proper application ensures optimal results while minimizing potential risks. By incorporating ferrous sulfate into fertilization programs, growers can address iron deficiencies efficiently, leading to stronger, more resilient plants.