Soil Amendments for Gardens and Farms

Soil Amendments For Gardening and Farming


Soil Amendments by Custom Biologicals

Custom Biologicals, Inc. Over 20 years and still growing

Welcome to the Soil Amendment site of Custom Biologicals! We’re glad you’re here.

Grow bigger, better plants and crops by using soil amendments.

Custom Biologicals manufactures and distributes biological products for agriculture.

Link to List of Biological Products

I’ve called this site living soils for a reason. Whether you know it or not – healthy soils are alive. They’re alive with microorganisms. In fact, healthy soils contain billions of microorganisms. These soil microorganisms are mostly bacteria and fungi. Soil microorganisms can be beneficial, or in the case of pathogenic microorganisms, disastrous to the plant.

Biological Soil Amendments

Biological soil amendments are sometimes called biological fertilizers, probiotic fertilizers, bio fertilizers, soil inoculant, microbial inoculant, or a host of other names. Biological soil amendments can cover a wide variety of topics and products. Generally, on  this site we ill discuss beneficial bacteria and beneficial Trichoderma. Both of which are key elements in the soil microflora and both help with a variety of soil problems.

Ultimately, beneficial microorganisms in the soil are essential for the plant to create and

soil amendment site

Custom GP contains beneficial Trichoderma soil fungi.

maintain a healthy root system.

Biofertilizers help the plant in two main ways; they help solubilize nutrients that already exist in the soil and the produce plant growth hormones, called phytohormones.

Custom Biologicals specializes in manufacturing two types of beneficial microorganisms; bacteria and fungi.

Custom Biologicals manufactures and distributes a variety of biological products designed to create healthier soils and bigger, stronger plants.

List of Soil Amendment of Custom Biologicals


All of our biological soil amendments are available in our online store.

Distributor Information

Custom Biologicals manufactures a wide variety of biological products for a number of industries, including agriculture.  Dealer/Distributor inquires both domestic and international are welcome.

Contact Custom at (561) 797-3008 or email us here Email Custom.

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  1. Dr Mac Maguire says:

    would like more information on Private label.

    1. MrBill says:

      Thanks for your interest in private labeling Custom Biologicals’ biofertilizer products. Please contact me directly for more information about this option at

    2. MrBill says:

      Thanks for your interest in our products. Yes we have private label agreements with our microbial products. Contact me at for more information.

  2. gill pedwell says:

    Hi I have small sample bottle ( 50ml) of you custom B5. How do we dilute it for use on flower and tree garden and on an avocado orchard

  3. 95Jamie says:

    I must say you have high quality content here. Your page can go viral.

    Thanks for your post about biofertilizers and Trichoderma.

    1. MrBill says:

      Jammie – Thanks for the kind words.

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