Seaweed powder

  • Ascophyllum nodosum (black seaweed)
  • Harvested in France
  • Powder 0-2.5 mm
  • Natural substance for biostimulant use
  • For use in Organic Agriculture
  • Fertilizer production
  • Production of seed coatings
  • Substrate mix
  • Compost tea (TCO)

Non-exhaustive list of compounds contained in ASCO :

  • Potassium
  • Calcium
  • Nitrogen
  • Magnesium
  • Phosphorus
  • Iron
  • Manganese
  • Boron
  • Oligosaccharides and Polysaccharides
  • Alginate
  • Carrageenan
  • Laminarin
  • Vitamins
  • Riboflavin
  • Thiamine


Available in 1 kg bags, 25 kg sacks and 1 T big-bags.

Shelf life: 2 years

  • Approved for organic farming in accordance with EC regulation 834/2007
  • Complies with EC regulation 1009/2019

L'Ascophyllum nodosum is a species of brown seaweed found mainly in the coastal regions of the North Atlantic. It is also known as "knotted kelp" or "black seaweed". This seaweed has a composition rich in nutrients and bioactive compounds, making it valuable in a variety of applications, including agriculture.

Here are just some of the uses forAscophyllum nodosum in agriculture :

  1. Organic fertilizer : L'Ascophyllum nodosum is often transformed into organic fertilizer. Seaweed extracts can be used to supply plants with essential nutrients such as nitrogen, phosphorus and potassium, as well as micronutrients such as iron, zinc and manganese.

  2. Plant growth enhancement : Extracts fromAscophyllum nodosum can stimulate plant growth by promoting cell division, increasing the water-holding capacity of the soil, and improving nutrient uptake by roots.

  3. Stress resistance : The bioactive compounds present inAscophyllum nodosum can boost plant resistance to environmental stresses such as adverse weather conditions, disease and insect attack.

  4. Improved crop quality: The use ofAscophyllum nodosum can lead to better quality harvests by improving the nutrient content of fruit and vegetables.

  5. Soil bioactivator : Algae can act as a soil bioactivator, promoting beneficial microbial activity in the soil.

  6. Reduced use of chemical fertilizers : Using extracts fromAscophyllum nodosumIn addition, farmers can reduce their dependence on chemical fertilizers, which can have environmental benefits.