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Earthcraft BioSystems

Earthcraft Seacraft SP

Earthcraft Seacraft SP

Regular price $25.00 USD
Regular price Sale price $25.00 USD
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Shipping calculated at checkout.

Seacraft SP is a natural and organic nutrient supplement made from premium cold-pressed North Atlantic sea kelp. Containing high levels of potassium, essential for plant growth in all phases, Seacraft SP can increase root formation, stimulate cell growth, activate plant enzyme systems, and promote bud formation. Rich in enzymes, amino acids, and trace elements, Seacraft SP is a nourishing addition to your garden.


Uses and Benefits:

  • Derived from North Atlantic sea kelp species ascophyllum nodosum
  • Provides essential nutrients, trace elements, amino acids, and vitamins
  • Contains natural plant stimulators that promote cell growth and leaf expansion
  • Drastically improves root development and increased root mass
  • Activates plant enzyme systems and facilitates internal processes for increased vitality
  • Promotes bud formation and increased number of budding sites
  • Promotes increased brix levels in plants
  • Increases harvest quality and yield

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.

Application Rate

0.5-2grams (⅛ -½ tsp) per gallon of water for root drench or foliar as often as desired

Derived From:

sea kelp (ascophyllym nodosum), potassium hydroxide


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


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.