Seaweed

Highly effective biostimulants made from the sustainable and naturally powerful seaweed extracts of Ascophyllum nodosum.  This variety contains essential natural compounds that plants can express their productive potential balanced by improving rooting fixation of flowers and fruits and promoting a greater accumulation of carbohydrates during the life cycle of the plant.

Ascophyllum nodosum extract is the active ingredient in some of our best-selling biostimulants and bionutrients, and offers a wide range of beneficial effects on plant health, yield, and disease resistance, as well as being certified for use in organic farming systems as a natural, non-toxic ingredient.

Croptek Bio seaweed extracts are specially formulated to produce exceptional results on a broad selection of crops and plants, in farming, horticulture, and other growing environments. All of our seaweed extracts contain a wide range of vitamins such as A, B2, 3, 5 and 12, C, D, E, K, chlorine and carotene; trace elements such as B, Cu, Fe, Mg, Mn, Mo, Ca and Z. Phytohormones such as Auxins, gibberellins, and Cytokinins. Polysaccharides

Products. (*denotes organic certification)

SeaPhyte.  Each is a liquid biostimulant that combines the powerful biostimulating action of our high-quality seaweed extract with balanced phosphite and humic acids. SeaPhyte utilises in-house expertise in biostimulant technology and formulation to combine these three biostimulants in a stable and balanced product.

SeaFol* Seaweed extracts from Ascophyllum nodosum have repeatedly shown their ability to promote yield and plant health in both scientific and on-farm trials. This seaweed extract is well established as a biofertiliser and as a plant biostimulant.  It is a pure concentrated seaweed extract which has an acidic pH of 4.4 – 4.6.

SeaFol Complex 2. SeaFol Complex 2 combines our concentrated Ascophyllum nodosum seaweed extract with added nutrition – 2 kg of NPK per 100 litres. It supports crop growth and health while also delivering a balanced nutrient boost. The product maintains an acidic pH of 4.4 – 4.6 to aid solubility in tank mixes.

SeaFol Complex 5. SeaFol Complex 5 offers the benefits of our seaweed-based biostimulant together with a higher nutrient input—5 kg of NPK (10-5-5) per 100 litres. It is ideal for supporting vigorous crop growth and early establishment. Like the rest of the range, it has an acidic pH of 4.4 – 4.6 for optimal mixing and uptake.

Maxicrop concentrate.  It is a pure seaweed concentrate containing 24% seaweed solids.  It is also a biostimulant for use on a wide range of agricultural and horticultural crops, boosting root growth, leaf chlorophyll, and alleviating abiotic stress.  It also stimulates microbial action in the soil and builds resistance to other environmental stresses.  The application can be as a root drench through to foliar spray in a programmed approach.

Maxicrop Original*.  A plant growth stimulant approved for use on organic crops. In addition, it increases populations of beneficial microbes and their activity in the soil aiding root growth and building resistance to environmental stress.  Suitable for all agricultural, horticultural, and ornamental crops.

Maxicrop Natural*. Is a blend of seaweed extracts and liquid fertiliser containing 5:2:5 NPK. The application can be as a root drench through to foliar spray in a programmed approach and is also suitable for all agricultural, horticultural, and ornamental crops

Maxicrop Triple.  Is a blend of seaweed extracts and liquid fertiliser containing 3:1.5:3.  It can be used on a wide range of agricultural crops as a biostimulant to boost rooting, leaf chlorophyll, and at the same time alleviating environmental stresses. The application can be as a root drench through to foliar spray in a programmed approach.

Maxicrop Xtra-Fol.  Is a blend of seaweed extracts and liquid fertiliser containing 8:8:7 plus sulphur trace elements and seaweed extracts. The application can be as a root drench through to foliar spray in a programmed approach.

SeaPhyte

Each is a liquid biostimulant that combines the powerful biostimulating action of our high-quality seaweed extract with balanced phosphite and humic acids.
View Product

SeaFol

Seaweed extracts from Ascophyllum nodosum have repeatedly shown their ability to promote yield and plant health in both scientific and on-farm trials.
View Product

SeaFol Complex 2

SeaFol Complex 2 delivers all the benefits of our seaweed extract with the added boost of 2 kg NPK per 100 litres. Ideal for supporting crop health and establishment, it maintains an acidic pH to aid nutrient uptake and tank mixing.


View Product

SeaFol Complex 5

SeaFol Complex 5 delivers the combined benefits of seaweed-based biostimulation and an enhanced nutritional package. As a biofertiliser, it supplies 5 kg of NPK per 100 litres along with trace elements and organic carbon to support vigorous early growth. As a biostimulant, it promotes physiological responses beyond those expected from nutrients alone—including improved root development, greater tolerance to abiotic stress, and enhanced overall plant vitality. The increased nutrient load makes it ideal for pushing crops forward during key stages of establishment and recovery, contributing to stronger growth and improved yield potential.
View Product

Maxicrop Concentrate

It is a pure seaweed concentrate containing 24% seaweed solids.
View Product

Maxicrop Original

A plant growth stimulant approved for use on organic crops.
View Product

Maxicrop Natural

Is a blend of seaweed extracts and liquid fertiliser containing 5:2:5 NPK.
View Product

Maxicrop Triple

Is a blend of seaweed extracts and liquid fertiliser containing 3:1.5:3.
View Product

Maxicrop Xtra-Fol

Is a blend of seaweed extracts and liquid fertiliser containing 8:8:7 plus sulphur trace elements and seaweed extracts.
View Product

See How we can help

CroptekBio products are used across a wide range of market sectors, whether you’re looking to improve yields, or improving soil and turf growth we can help.

Get in touch with Croptek

At Croptek, our experienced team is always on hand to help and advise you on the benefits of all of our products. So, if you’d like to discuss your requirements, then please get in contact. Contact us