Wicked Organic Iron Sulfate

Iron (Ferrous) Sulfate 30% is a micronutrient-rich soil amendment primarily composed of ferrous sulfate (FeSO₄), delivering 30% iron to address iron deficiencies in plants and adjust soil pH. Widely used to correct iron chlorosis and enhance plant vigor, it is a valuable tool in gardening and agriculture. Below, we explore its composition, applications, benefits, and environmental considerations, optimized with key terms like iron supplement, soil health, plant nutrition, and chlorosis correction.

How to Apply Iron (Ferrous) Sulfate 30%

Proper application of Iron (Ferrous) Sulfate 30% ensures effective delivery of iron to plants and soil, correcting deficiencies while minimizing risks like leaf burn or environmental impact. Follow these detailed methods for various scenarios:

• Garden Beds:

  • Preparation: Broadcast 1–2 lbs per 100 sq ft evenly over the soil surface to address iron deficiency or lower pH.

  • Incorporation: Mix into the top 2–4 inches of soil using a garden fork or tiller to ensure root zone contact.

  • Watering: Water thoroughly post-application to dissolve granules and facilitate iron uptake.

  • Timing: Apply in early spring or fall when plants are actively growing or preparing for dormancy.

• Individual Plants:

  • Application: Sprinkle 1–2 tbsp around the base of each plant, keeping it 2–3 inches from stems to avoid burn.

  • Integration: Lightly work into soil with a hand tool and water generously to enhance absorption.

  • Frequency: Reapply every 4–6 weeks during the growing season, based on soil tests and plant symptoms.

• Trees and Shrubs:

  • Application: Distribute 1/2–1 lb per inch of trunk diameter around the drip line, where roots are most active.

  • Integration: Lightly rake into soil and water generously to ensure iron penetration.

  • Timing: Apply in early spring to support new growth or late fall for root health.

• Containers and Potted Plants:

  • Mixing: Blend 1 tsp per gallon of potting mix before planting to enrich the soil.

  • Top Dressing: For established plants, sprinkle 1/2 tsp per 4-inch pot diameter around the base and water in, avoiding foliage contact.

  • Frequency: Reapply every 4–6 weeks, monitoring for signs of over-application.

• Lawns and Turf:

  • Application: Spread 1–2 lbs per 1,000 sq ft using a broadcast spreader for even coverage to promote green color and control moss.

  • Follow-Up: Water well to incorporate granules into the soil, enhancing turf vigor.

  • Timing: Apply every 6–8 weeks during the growing season for sustained results.

• Foliar Spray (for rapid correction):

  • Preparation: Dissolve 1–2 oz per gallon of water and apply using a sprayer, targeting leaves but avoiding excessive runoff.

  • Timing: Apply in early morning or late afternoon to minimize leaf burn, repeating every 2–4 weeks as needed.

Best Practices:

• Conduct a soil test to confirm iron deficiency or high pH and tailor application rates to avoid over-acidification.

• Wear gloves, protective eyewear, and a mask to prevent skin or respiratory irritation from dust or spray.

• Avoid applying before heavy rain to minimize runoff risks.

• Apply every 4–8 weeks during the growing season, based on soil test results and plant symptoms, to maintain soil health.

Composition

Iron (Ferrous) Sulfate 30% is primarily ferrous sulfate (FeSO₄), a chemical compound containing 30% iron by weight, an essential micronutrient for chlorophyll production and plant metabolism. The remaining components include water of crystallization and potential stabilizers or fillers, depending on the manufacturer’s formulation. It also contains sulfur, a secondary nutrient, but its primary role is iron delivery. This processed compound is designed for agricultural use to correct iron chlorosis and improve soil chemistry.

Organic and OMRI Status

Iron (Ferrous) Sulfate 30% is an inorganic compound, typically produced through industrial processes, and is not considered an organic soil amendment. It is not generally listed on the USDA National Organic Program’s (NOP) National List of Allowed Substances for organic crop production, meaning it is unlikely to be USDA Organic compliant. To confirm OMRI status, check the Organic Materials Review Institute’s database or product packaging for the OMRI seal. Without specific certification, it is not suitable for certified organic gardening.

Nutrient Profile

Iron (Ferrous) Sulfate 30% does not have a standard NPK ratio, as it is a micronutrient amendment rather than a primary fertilizer. It provides 30% iron, critical for chlorophyll synthesis and plant health, and contains sulfur (a secondary nutrient) as part of its chemical structure. It does not supply significant nitrogen, phosphorus, or potassium. Trace amounts of other micronutrients may be present but are not primary contributors. For balanced nutrition, pair with NPK fertilizers based on soil test results to optimize plant nutrition.

Form and Processing

Iron (Ferrous) Sulfate 30% is typically available in granular or powdered form, manufactured through industrial processes (e.g., as a byproduct of steel production or by treating iron with sulfuric acid). This processing ensures a consistent iron concentration suitable for agricultural use. The granular/powder form allows for easy soil incorporation or foliar application, delivering rapid or sustained iron availability to address chlorosis and enhance soil health.

Uses

Iron (Ferrous) Sulfate 30% is a versatile micronutrient amendment with multiple applications:

• Iron Deficiency Correction: Treats iron chlorosis, restoring green foliage in plants with yellowing leaves.

• Soil pH Adjustment: Lowers pH in alkaline soils, improving iron and nutrient availability.

• Lawn Care: Promotes deep green turf and controls moss growth in iron-deficient lawns.

• Plant Health: Enhances chlorophyll production, supporting photosynthesis and growth.

• Acid-Loving Plants: Benefits crops like blueberries that thrive in acidic soils.

  
  

  It is ideal for vegetable gardens, lawns, orchards, and ornamental landscapes needing iron supplementation.

Best Plants and Crops

Iron (Ferrous) Sulfate 30% is ideal for plants showing iron chlorosis or requiring acidic soil:

• Lawns/Turf: Restores green color and controls moss in iron-deficient grasses.

• Ornamental Plants: Azaleas, rhododendrons, camellias, and gardenias benefit from improved iron availability.

• Fruit Trees: Citrus, apples, and pears develop healthier foliage and better yields.

• Vegetables: Spinach, lettuce, tomatoes, and peppers overcome chlorosis for robust growth.

• Acid-Loving Plants: Blueberries, cranberries, and hydrangeas thrive in acidified soils.

• Field Crops: Corn and soybeans benefit in high-pH soils where iron is less available.

Suitability

Iron (Ferrous) Sulfate 30% is adaptable for:

• Containers: Corrects iron deficiencies in potted plants, especially acid-loving species, with careful application.

• Raised Beds: Enhances iron availability and pH balance for vegetables and ornamentals.

• Field Crops: Improves yield in crops like corn or soybeans in alkaline soils.

• Lawns/Turf: Promotes vibrant, moss-free turf in iron-deficient conditions.

Plant Growth Benefits

Iron (Ferrous) Sulfate 30% offers significant advantages for plant health and soil vitality:

1. Chlorophyll Production: Enhances photosynthesis, restoring green foliage and vigor.

2. Chlorosis Correction: Reverses yellowing leaves caused by iron deficiency.

3. Improved Nutrient Uptake: Facilitates absorption of iron and other nutrients in alkaline soils.

4. Soil Acidification: Lowers pH, benefiting acid-loving plants and improving nutrient availability.

5. Plant Resilience: Supports robust growth, increasing resistance to stress, disease, and pests.

6. Enhanced Yields: Promotes healthier foliage and fruit production in deficient soils.

Soil and Environmental Impacts

• Soil Structure: Minimal direct impact; indirectly improves through healthier plant root systems.

• Water Retention: Limited effect; pair with organic matter (e.g., compost) for better moisture retention.

• Nutrient Holding Capacity: Does not significantly enhance cation exchange capacity; focus is on iron delivery.

• Microbial Life: Indirectly supports microbes via improved plant health and root exudates.

• pH Buffering: Lowers pH in alkaline soils, improving nutrient availability but not buffering in the traditional sense.

• Runoff/Leaching: Excessive application can lead to iron or sulfur runoff, potentially impacting waterways.

Safety and Environmental Considerations

Safety for Pets and Children

Iron (Ferrous) Sulfate 30% is potentially toxic if mishandled:

• Application: Wear gloves, protective eyewear, and a mask to avoid skin, eye, or respiratory irritation.

• Access: Keep pets and children away from treated areas until watered in and dried to prevent ingestion or contact.

• Storage: Store in a sealed, dry container in a secure location, out of reach and away from food or water sources.

• Ingestion: Can cause digestive upset or toxicity if ingested; seek immediate medical or veterinary attention if consumed.

Environmental Risks

• Water Contamination: Over-application may lead to iron or sulfur runoff, potentially harming aquatic ecosystems.

• Soil pH Imbalance: Excessive use can over-acidify soil, harming plants and microbes.

• Iron Toxicity: Overuse can cause toxicity in plants or disrupt soil balance.

• Sustainability: Produced industrially, often as a byproduct; verify ethical sourcing for sustainable agriculture.

Storage and Shelf Life

• Storage: Store in a cool, dry, well-ventilated area in a tightly sealed container to prevent moisture absorption or clumping. Keep away from incompatible materials like strong acids or bases.

• Shelf Life: Lasts 1–2 years if stored properly, maintaining efficacy as an iron supplement.

• Speed of Action: Soil applications show results in 2–4 weeks; foliar sprays act within days to a week.

Additional Details

• Odor: Slight metallic or mineral-like smell, not prominent or offensive.

• Edible Plants: Safe for vegetables, fruits, and herbs when applied per guidelines, with thorough produce washing.

• Sourcing: Typically a byproduct of steel production or chemical manufacturing; verify supplier for specific origins.

• Packaging: Often sold in bags or drums (e.g., 5, 25, or 50 lbs); check manufacturer details for specifics.

Conclusion

Iron (Ferrous) Sulfate 30% is a powerful micronutrient amendment, delivering iron to correct chlorosis, enhance chlorophyll production, and adjust soil pH. Ideal for lawns, ornamentals, fruit trees, and vegetables in alkaline soils, it supports plant health and agricultural productivity. By following precise application methods, conducting soil tests, and adhering to safety precautions, gardeners can maximize its benefits while minimizing environmental risks, fostering vibrant plants and healthier soil ecosystems.

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