This concentrated liquid seaweed extract derived from Ascophyllum nodosum without the use of chemicals is an industry leader.  A great source of plant nutrients and organic carbon, BioActive Seaweed promotes strong and vigorous growth, excellent root development as well as increasing the plants ability to withstand pressure from disease and environmental stresses.


  • Promotes strong root development
  • Improves plants tolerance to environmental and biological stresses
  • Encourages activity of beneficial microbes
  • Results in stronger and healthier plants
  • Concentrated natural formulation for best results
  • Low application rates for greater affordability
  • Increases plant vigour

BioActive Seaweed contains 30% solids

Typical analysis (w/v):

0.58% Nitrogen (N), 0.29% Phosphorus Pentoxide (P₂O₅), 1.02% Potassium (K₂O),

And: boron (B), copper (Cu), iron (Fe), magnesium (Mg), manganese (Mn), molybdenum (Mo), zinc (Zn)

Also: alginates, amino acids, auxins, cytokinins, gibberllins, vitamins, betaines, fucoidan, laminarin, mannitol


Further description and action of these components of BioActive Seaweed:

Alginates (>24% content typically) improve soil structure; increasing humates, forming crumb structure, increasing soil aeration & aerobic bacteria, increases moisture retention.  With mannitol (>10% content typically) a carbohydrate, trace elements (present in seaweed and the soil) are chelated and made available to plants.

Amino acids (alanine, valine, glycine, isoleucine, serine, tyrosine and stress protecting amino-betaines); these Natural L-isomers are used by plants directly in the production of proteins.

Auxins (>90 ppm content typically), plant hormones are essential for plant body development, enabling a plant to react to external conditions.  Auxins stimulate cell elongation & promote root initiation.

Cytokinins (>285 ppm content typically) promote cell division and plant growth.

Gibberellins (>150 ppm content typically) regulate plant growth and enzyme production, breaking dormancy and stimulating cell elongation causing plants to grow taller.

Vitamins: A, B1, B2, B3, B5, B12, C, D, E, K, choline and carotene.

Betaines (>0.04% content typically) aid plants to cope with stresses such as cold, heat, water deficient or high salt conditions and increases the tolerance of plants to abiotic stress.

Fucoidan (>8% content typically) provides plant protection in strong sunlight and harsh environments.

Laminarin (>20% content typically) accelerates seed germination and plant growth and elicits defense response in plants reducing infection of the plant by various diseases.

Mannitol (>10% content typically) increases trace element availability, increases a plants tolerance to salt and osmotic stress and has a role in a plants response to attack from pathogens; reducing biotic and abiotic stresses.  Mannitol decomposes readily and unlike cellulose, doesn’t immobilise nitrogen.

  • 10L

Application guidelines

Soil based root zones
3 - 5 litres/ha in 300 - 500 litres water
Apply three times a year

Application notes

*When tank mixing we strongly recommend a simple ‘bucket test’ prior to application in order to confirm compatibility.