7 Best Fertilizer For Clay Soil In 2021 Reviewed

In summary: Espoma GG6 Garden Gypsum was our best fertilizer for clay soil. At the same time, Quantum Growth Organic took our runners up position. Both fertilizer brands are compatible with either plants or lawns in clay infested areas.Best Fertilizer For Clay Soil

10-10-10 is the appropriate NPK Fertilizer ratio for clay soils. On the other hand, the best time to fertilizer clay soils is during the onset of the planting season. Additionally, slow-release fertilizer is 100% compatible with clay soil. Below find our clay soil feed reviews and buyers guide.

Reviews:7 Best Fertilizer For Clay Soil  In 2021

1.Espoma GG6 Garden Gypsum For Clay Soil

Wondering what kind of fertilizer for clay soil is compatible, either hard, red clay, or even heavy clay? Well then find Espoma GG6 Garden Gypsum as our editor’s pick. It comes in pellet form. As a result, it is compatible with both indoor and potted plants. Interestingly it has a high amount of phosphorus nutrient.

Therefore, it induces rooting when propagating plants or trees in clay soil. Due to the high nitrogen present, Espoma causes lush green vegetation growth. Another amazing is that all the raw materials of this product are naturally occurring. Due to this reason, it managed to be our editor’s pick of clay soil Gypsum

Besides being a rich source of all the primary plant nutrient, Espoma is also 100% soluble in water. Due to this reason, the formulation of Espoma clay soil feed can be formulated through fertigation or foliar application. High urea present in this fertilizer promotes rapid leaf green-up ability regardless of whether you are fertilizing plants on vast a or red clay soil region.

  • Organic
  • Urea rich
  • Soluble in water
  • Non-burning formula
  • Weighs 6 pounds

2.Quantum Growth Red Clay  Soil Organic Fertilizer

Second, on our list, find growth organic red clay water-soluble fertilizer form Quantum.  Another advantage is that it is an iron-rich (Fe). As a result, Quantum maintains an overall green colour of both indoor and outdoor plants growing on clay soil. Also, it has high percentages of calcium nutrients (Ca).best fertilizer for red clay soil

Besides being a liquid fertilizer, Quantum employs a smart nutrient release technology. Therefor3, nutrients are only released to clay soil only when they are needed. Also, you can formulate Quantum Growth through drenching as it is a liquid fertilizer. High potassium (K) present corrects yellowing of plants leaves growing ion clay soil

However, for effective results, consider formulating g Quantum Growth red clay soil fertilizer early in the morning. Similarly, the application of Quantum Growth clays soil feed late in the evening reduces the chances of evapotranspiration. It is also 100% organic and pure clay soil bio-fertilizer. As a result, it is environmentally friendly as no harmful aerosol sprays are released to the atmosphere.

  • Environmental friendly
  • Non-burning formula
  • Liquid fertilizer
  • Organic product
  • Liquid clay soil feed.

3.CANNA Organic Coco Substrate Bag RHP Certified

Before planting or transplanting, either vegetables, trees, outdoor, or indoor plants in clay soil consider carrying our clay soil amendment. Coco Substrate, which comes from CANNA, is a100% organic and also compatible with clay soil. It has high calcium nutrients. As a result, it helps in improving plants’ disease-resistant ability.best fertilizer for trees in clay soil

Additionally, it has a high Ammonium sulfate ingredient. As a result, both thigh Sulphur nutrient and the 21% nitrogen present promote lush green vegetation growth. Moreover, it has a high bone meal ingredient. The bone meal gives this CANNA feed quality slow release fertilizer characteristics. As a result, it remains valid for our four full months.

Aplomb being a granular fertilizer application, is slightly smooth.  The manufacturer also employs a quality sulfur-coating on individual fertilizer granules. As a result, Canna is a slow-release fertilizer. The slow-release nature ensures that hard or heavy clay soils have access to a significant amount of minor plant nutrients for over six weeks.

  • Organic
  • Heavy duty
  • Bone meal rich
  • Slow-release
  • Granulated

4.Advanced Grass In Clay Soil Fertilizer Nutrients, 4 Liter

Up next find Advanced Nutrients as our editor’s pick for red clay soil liquid fertilizer. Besides being a liquid fertilizer, it also promotes the growth of soil microbes. Great phosphorus nutrient present supplies clay soil with orthophosphate ions. Therefore, advance nutrient helps and also induces root development when propagating plants with clay soil as the growing media.best organic fertilizer for clay soil

As a result, it minimizes instances of stunted growth either in food crops, vegetables or house plants growing on clay soil. On the other hand, if you are looking for a way on how to improve red clay soil, then consider going selecting this advanced nutrient. Either when fertilizing grass in red or heavy clay soil.

It comes with a military-grade 5-litre container. As a result, transporting and also storing this fertilizer is slightly comfortable. Additionally, Advanced Nutrients featured relatively high percentages of both calcium (Ca) an Iron (Fe) ingredient. As a result, the two nutrients enhances the overall green colour of both the leaves and stems.

  • Organic
  • Smart release
  • Effective’
  • Gives instant results
  • Liquid fertilizer

5.Osmocote Smart-Release 10 10 10 Fertilizer For Trees In Clay Soil

When fertilizing trees in clay soil, high nitrogen fertilizer is the most appropriate. High nitrogen fertilizer promotes lush green growth in both new and well-established trees in clay soil. Osmocote Smart-Release was our preferred 10 10 10 fertilizer as it is compatible with trees either hard, heavy and red clay soil types.best fertilizer for heavy clay soil

Additionally, when growing trees in clay soil consider going for a phosphorus-rich fertilizer to ensure that establishment of a robust root system will be much easier. Similarly, the high phosphate content when growing trees in clay soil minimize root rot instances.

It comes with a slightly high amount of endomycorrhizal fungi. As a result, it promotes the formation of extensive and robust plant roots system in clay soil. Similar, the high endomycorrhizal fungi ingredient present enhances the disease-resistant ability of plants growing in clay soil. Lastly, it is a dual-duty product as it works as a rich source of NPK fertilizer ingredients and also as a weed smothering agent.

  • Professional grade
  • Non-burning formula
  • Induces rooting
  • Enhances lush green growth
  • Granular

6.Dr Soil  Clay Soil   Bermuda Grass Iron Granules  Fertilizer

Up next when growing Bermuda grass in clay soil, also consider pickling these iron granules from Dr Soil. The iron granules professionally enhance the overall green colour of Bermuda grass. Similarly, iron granules present plays a massive role in amending the overall soil structure.best fertilizer for clay soil lawn

Another advantage of the high iron (Fe) present is that it moderates the overall clay soil pH. Interestingly enough, these iron granules from Dr Soil are 100% organic as they appear in the OMRI listing. Also, it featured high phosphorus (P). As a result, it ensures proper root formation in all lawn grass varieties growing in clay soil.

Another fantastic thing is that besides being slow-release fertilizer, it is also a dual-duty product. Due to this reason, it cats at a nutrient source. On the other hand, apart from being an accurate Bermuda fertilizer, it is also a perfect weed smothering agent. Lastly, by being a rich source of available nitrogen, Dr Soil helps in moderating the overall clay soil pH positively.

  • Iron-rich
  • OMRI listing
  • Moderates soil pH
  • Organic
  • Granular

7.Roots Excelurator GOL Clay Soil Garden Fertilizer

Roots Excelurator from house and garden took our last position of clay soil garden fertilizers currently on the market. The primary role of this fertilizer is to induce the formation of a reliable root system.it has a high phosphorus ingredients content. Besides being a rich source of phosphorus, the 250 Ml Roots Excelurator is ready to use as no prior assembly is needed.best garden fertilizer for clay soil

Amazingly it comes with a quality plastic container that makes storage and transport to be much more comfortable. The high amount of potassium nutrient present also boosts natural plant defense mechanisms against diseases. Additionally, the manufacturer featured bio-inoculants in slightly high amount. Bio-inoculants current ensures that primary plant nutrients re readily available for uptake by plants, trees or grass growing in clay soil.

Root sickness and root rot are some of the significant advantages of using this Roots Excelurator. When growing plants or grass in a garden which is clay soil infested Roots Excelurator induce healthy root formation, moreover, it is a rich source of rhizobium bacteria. As a result, Roots excelurator provides an additional source of nutrient to plants, grass or trees growing in clays soil.

  • Induces root formation
  • Enhances green color
  • Prevent roots roost
  • Quality storage option
  • Liquid in nature


Besides Espoma GG6 Garden Gypsum dominating our best fertilizer for clay soil position, it also features a non-burning formula. Also, it comes from an Espoma manufacturing company that has perfect the art of designing appropriate clay soil amendments.

Another advantage of this Espoma salt is that it is 100% soluble in water. As a result, fertigation and foliar fertilization are the most appropriate fertilizer formulation option compatible with Espoma. Other top fertilizer brands that are 100% compatible with different clay soil types include Quantum Growth Organic.


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