AF Stim XL

100% pure cold extracted seaweed

AF Stim XL is a 100% pure seaweed cold extract, obtained from Ascophyllum nodosum, and produced by an innovative ‘cold extraction’ process. It is a bio-stimulant that is especially effective during critical growth stages as well as aiding in overcoming environmental stress situations.

Available pack sizes
20L, 200L, 600L, 1000L


Total analysis %

Ascophyllum nodosum 100
Nitrogen 1
Phosphorus 0.15
Potassium 2.4
Chlorine 4.9
Sodium 3.7
Sulphur 1.6
Magnesium 0.65
Calcium 0.42
Iodine 0.12
Fibres Traces
Mannitol Traces
Antioxidents Traces

The benefits

  • Naturally rich in Polyphenols, Alginates, Mannitols, Fucoidans, Laminarens and anti-oxidents.
  • Reinforces plant growth at key events, such as germination, transplanting, flowering and ripening.
  • Guaranteed 100% pure Ascophyllum nodosum extract – no synthetic hormones added.
  • Produced using only fresh, live, hand harvested Asophyllum nodosum in an eco-friendly process.
  • Particularly effective when applied before stress to ‘prime’ the plant response.
  • Interacts with plants a molecular level assisting plants to naturally resist external osmotic stresses.
  • Compatible with most commonly used agrochemicals due to naturally slightly acidic pH.
  • Approved for use in organic systems (OF&G Organic).

Why Ascophyllum nodosum?

Seaweeds have been used in agriculture since the 17th Century to aid the crop to improve resistance to drought. Combined with new technologies and due to climate changes, seaweed is the number one bio-stimulant used by growers worldwide.

Ascophyllum nodosum is the most researched seaweed species for agricultural use. Being exposed to freezing salt water at Winter high tides, and extreme heat at low tide in Summer, Ascophyllum nodosum has adapted to live in the intertidal zone by evolving its biochemical compounds to overcome severe abiotic stress. This capability, combined with a specific extraction method to keep all resistance property to the seaweed, makes Ascophyllum nodosum the perfect bio-stimulant.

The benefits of seaweed application in agriculture is numerous and diverse such as enhancement of health and growth of plants, improved water and nutrient uptake, frost and saline resistance, biocontrol and resistance toward phytopathogenic organisms, remediation of pollutants of contaminated soils and fertilisation.

Application method

AF Stim XL can be applied in many situations to a variety of crops as either a soil amendment or bio-stimulant.

All agricultural crops: 2-3 L/ha in 100-200 L/ha water.

Potatoes: 1-2- L/ha in 100-200 L/ha water. Start when the potato plant reaches 10cm, then every 2 weeks.

Vegetables: 1-2 L/ha in 100-200 L/ha water. Starter when the plant has 3-4 leaves, then every 3 weeks.

As a soil amendment: 10-20 L/ha in 600L/ha water. Wash into the soil if possible.

Shake the container well before opening and use. Spray equipment should always be clean before adding product. Consult with Aiva Fertiliser for further details. If unsure, it is advised to do a jar test before adding to the sprayer.