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Earthcraft BioSystems

Earthcraft Caliceous SP (Organic Cal Mag)

Earthcraft Caliceous SP (Organic Cal Mag)

Regular price $35.00 USD
Regular price Sale price $35.00 USD
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Caliceous SP is a natural and organic nutrient supplement that contains abundant levels of calcium and magnesium as well as amino acids and proteins containing nitrogen. These nutrients are vital to plant health, development of foliage, chlorophyll formation, and phosphorus uptake and migration. This powder formula is completely soluble to allow for maximum nutrient uptake. Caliceous is suitable for all stages of growth for general purpose and to correct deficiencies.

Uses and Benefits:
  • Provides secondary macronutrients calcium and magnesium essential for plant growth in all phases
  • Calcium is responsible for plant structure, cell division, growth rate, and for strengthening cell walls
  • Magnesium plays a crucial role in absorbing light and converting into energy, as the central atom of the chlorophyll molecule, while creating sugars and carbohydrates
  • Improves the absorption of phosphorus and other nutrients by roots and translocation within the plant
  • Activates and regulates a number of plant growth-regulating enzyme systems
  • Effective as root drench or foliar treatment and compatible with any nutrient regime


Compatibility with Beneficial Insects:

The carefully selected blend of water-soluble, organic ingredients that make up the Earthcraft BioSystems line make it harmless against your beneficial insects, yet effective in their intended uses.

Product Versatility:

The organic, bio-available nutrients are an excellent addition to any no-till garden to fill the gaps when your soil biology may not be able to keep up with your plants demands. The exceptional cost value of these nutrients perfectly aligns with the economical approach of regenerative agriculture.

The soluble powder is compatible in any irrigation or fertigation systems without clogs and it can be used in any soil or soil-less growing mediums such as coco coir, peat and even rockwool.

Derived From:

calcium chloride, magnesium sulfate

Commercial Pricing

We do commercial pricing! If you're interested in discussing further and getting some commercial pricing, please don't hesitate to reach out to me at

Application Rate
4-8 ml per gallon of water for root drench or foliar as often as desired


We recommend storing all dry amendments and nutrients in a dry, cool location away from direct sun.


Shipping on all our non-living goods is free to the lower 48 United States.

Returns and Replacement

All dry amendments and nutrients are returnable within 14 business days, as long as the container is unopened and packaging is in the same condition as sent.

If your package is damaged during shipment, please document and send us pictures and notice to and we will make it right!

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Earthcraft Biosystems and MI Beneficials products go together very well

Friends with Benefits

The Earthcraft Biosystems nutrient line is not only the perfect companion to MI Beneficials soil amendments, but they are harmless to your living soil organisms such as the ones we offer in our Biodiversity Pack.

  • Fast and Free Shipping

    There are free shipping options on orders of amendments, nutrients, natural inputs and other non-living goods over $35 to the lower 48!

  • Dedicated to Sustainability

    All of Earthcraft Biosystems' packaging for dry goods is completely compostable including stickers.