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Plater Horticultural Division manufactures novel biostimulants and micronutrients for the agriculture and horticulture industries. All our products are manufactured exclusively on-site in Glossop, North Derbyshire.

We manufacture natural extracts using a unique manufacturing system without the use of synthetic chemicals, heat or pressure. Our range of natural extracts include cold-press seaweed extracts and fungal chitosan.

We are are pioneering organic acid chelation for next generation micronutrient products. We chelate zinc, manganese and iron, with organic acids to improve their availability to crops and reduce the environmental impact of synthetic chelates.

Our revolutionary 'one part' hydroponic fertilizer, which supplies all plant nutrients in one product, thus doing away with the need for 'A' and 'B' products. Please speak to us about testing this product in your growing systems.

We love thinking outside the box and have the drive and determination to succeed. We welcome projects to develop new applications for our unique manufacturing system. 

Our expertise includes:

  • Extraction and refinement of bioactive ingredients from plants and algae (seaweeds) and fungi;
  • Chelation of micronutrients with organic acids;
  • Contract manufacturing of fertilizer raw materials;
  • Global and regional regulatory issues; and
  • Analysis of fertilizer biostimulant composition/activity. This can include elemental composition, heavy metal analysis, bioassays, compatibility testing with other agrochemicals.

Product Portfolio


Amino acid blends
Cold-pressed seaweed extract
Cytokinin biostimulant
Potassium humate
Potassium phosphite
Potassium silicate
Stubble digester / Thatch degrader

Novel Liquid Fertilizers

PB-1 UV Absorber
Custom NPK and micronutrient fertilizer blends
Liquid gypsum
OPTIGROW - Hydroponic Fertilizer
Phosphorus liberator

Chelates (Citrate-chelated micronutrients)

Ferric ammonium citrate (FAC)
Manganese ammonium citrate (MnAC)
Zinc ammonium citrate (ZAC)

A member of the Commercial Horticultural Association: The trade association for manufacturers and suppliers of plants, products and services to commercial horticulture worldwide.