Monterey Dr. Iron Acidifier Granules Iron and Elemental Sulfur Acidic Fertilizers, 7 lb
Monterey Dr. Iron Acidifier Granules Iron and Elemental Sulfur Acidic Fertilizers, 7 lb
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Monterey Dr. Iron Acidifier Granules Iron and Elemental Sulfur Acidic Fertilizers, 7 lb

4.9 stars out of 8 reviews
(4.9)|
8 ratings

Key item features

  • Stain-Free Application: Applied in oxide form, Dr. Iron prevents staining on concrete surfaces until it converts to sulfate form upon contact with soil moisture.
  • Versatile Application: This product is suitable for use on turf, flowers, vegetables, ground covers, and shrubs, facilitating easy application and plant uptake due to its iron and sulfur combination.
  • pH Reduction: Dr. Iron effectively reduces soil pH and is formulated to avoid staining or burning, unlike some other iron products.
  • Organic Certified: OMRI listed and approved, this product meets the standards for organic gardening under the USA's national organic program.
  • Corrects Deficiency: Specifically addresses iron deficiency, which is a common cause of yellowing in lawns and plants.
  • Natural Composition: Composed of 22% iron and 55% sulfur, it is described as one of the most natural iron products available.
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Current price is $31.05
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  • Free 30-day returns

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Columbus, 43215
Arrives by Fri, Apr 17
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Sold and shipped by Esbenshades Garden Center
4.668577981651376 stars out of 5, based on 4360 seller reviews(4.7)
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$30.73
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Shipping, arrives by Tue, Apr 21 to Columbus, 43215
Sold and shipped by Constantly Growing
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4.9 out of 5 stars
stars8 ratings6 reviews
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Showing 1-3 of 6 reviews

Sep 21, 2025
Sarah
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Size: 1
Sold and shipped byMagic Valley Gardens
5 out of 5 stars review

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Easy to use product

Bought this to help with chlorosis on many different plants and time will tell next year if it was effective.

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Helpful?6XW0LQQW59SZ19277190
Mar 22, 2026
Linda
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Size: 7 lbs
Sold and shipped byUnbeatableSale Local
5 out of 5 stars review

Verified Purchase

Plant nutrition

Works like it should

Helpful?6XW0LQQW59SZ19277190
Sep 19, 2025
Melissa
Item details
Size: 1
Sold and shipped byEsbenshades Garden Center
5 out of 5 stars review

Verified Purchase

Great and fast shipping

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Helpful?6XW0LQQW59SZ19277190