Seaweed Granules

from £16.80

Sustainably harvested from the pristine waters of the Shetland Isles and Ireland, our nutrient-rich, easy-to-use seaweed granules enhance soil health and promote vibrant plant growth. These seaweed granules are packed with essential minerals and perfect for composting, soil conditioning or lawn treatment.

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Our seaweed granules come from the cold, clear, unpolluted waters surrounding the Shetland Isles and Ireland, where our Ascophyllum nodosum seaweed is harvested by hand at low tide. Our harvesters use sharp knives, leaving at least 6 inches of the stalk to regenerate, so the plant grows back even stronger. 

Collected in nets or buckets, it’s moved just a few hundred yards to the drying sheds where it’s dried and bagged. From there the seaweed granules begin their journey to your garden and begin that wonderful natural cycle anew.  

Can anything be more sustainable? A burst of fresh Atlantic air and the essence of crystal-clear seas greet you when you untie the bag. 

Scottish Natural Heritage and the Irish Department of Agriculture, Food and Marine monitor the entire process. Our friendly, organic farming partners are passionate about protecting the environment and ensuring coastal regeneration continues. No waste is left behind; any remaining seaweed nourishes their fields or treats their cherished livestock. 

Our seaweed granules can be mixed into compost, applied directly around established plants, added to planting holes for shrubs or spread across lawns for a lush, verdant green. 

Other natural items to complement our seaweed include neem fertilizer, Biohumus (worm castings) and Mycorrhizal Fungi, known as “Nature’s Wonderdrug”.  

Below are the detailed nutrient values but remember, nature’s composition can vary slightly with each harvest. 

Nitrogen   0.05%  
Phosphate (P2O5)   0.08%  
Potash (K2O)   0.20%  
Aqua regia calcium   0.56%  
Aqua regia magnesium   1.04%  
Aqua regia sodium   7.45%  
Aqua regia zinc   142 mg/kgDM  
Aqua regia copper   9.38 mg/kgDM  
Aqua regia iron   476 mg/kgDM  
Aqua regia manganese   42.13 mg/kgDM  
Aqua regia sulphur   21900 mg/kgDM  
Boron   363 mg/kgDM  
  • Mix into soil before planting to improve structure and fertility 
  • Add to planting holes to promote strong root development 
  • Use as a top dressing around established plants to boost growth and retain moisture 
  • Incorporate into compost to enhance its nutrient content and microbial activity 
  • Spread over lawns as a natural fertiliser to improve grass health 
  • Reapply every 4–6 weeks during the growing season for continuous nourishment 

Water thoroughly after application to help the granules integrate into the soil.