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Regulation (EU) 2019/1009 on EU fertilising products (the Fertilising Products Regulation, or FPR) is the primary EU regulatory framework for algae used as agricultural inputs — as biostimulants, soil improvers, organic fertilisers and nutrient sources. This chapter covers the structure of the FPR, the provisions of direct relevance to algae, and the interaction with other regulatory frameworks that producers entering the biostimulant and fertiliser market need to understand.

Regulation (EU) 2019/1009 of the European Parliament and of the Council of 5 June 2019 laying down rules on the making available on the market of EU fertilising products and amending Regulations (EC) No 1069/2009 and (EC) No 1107/2009 and repealing Regulation (EC) No 2003/2003, OJ L 170, 25.6.2019, p. 1. EUR-Lex

The FPR establishes a voluntary EU harmonised framework for “EU fertilising products” — a defined category that includes:

• Fertilisers (providing nutrients to plants)
• Liming materials (adjusting soil pH)
• Soil improvers (improving soil physical, chemical or biological properties)
• Growing media
• Agronomic additives
• Plant biostimulants
• Inhibitors (nitrification or urease inhibitors)
• Blends of the above categories

Manufacturers who comply with the FPR's requirements and use the “CE marking” system may market their product across all EU member states without further national authorisation. The regulation is voluntary: a producer may also choose to continue placing fertilising products on individual member state markets under applicable national law (which continues to co-exist with the FPR), but national law cannot restrict CE-marked EU fertilising products.

Relevance to algae: Algae and algae-derived materials are explicitly within the scope of the FPR as both plant biostimulants (Product Function Category 6, PFC 6) and as Component Material Categories (CMCs). This is one of the most commercially significant recent EU regulatory developments for the algae sector.

The FPR classifies EU fertilising products into Product Function Categories (PFCs) defined in Annex I. The PFCs most relevant to algae are:

• PFC 6 — Plant biostimulant: defined as an EU fertilising product stimulating plant nutrition processes independently of the product's nutrient content, with the sole aim of improving one or more of the following: nutrient use efficiency, tolerance to abiotic stress, quality traits, or availability of confined nutrients in the soil or rhizosphere. Biostimulants are subdivided into PFC 6(A) (microbial) and PFC 6(B) (non-microbial). Algae-derived biostimulants typically fall under PFC 6(B).
• PFC 1 — Organic fertiliser: organic fertilisers derived from algal biomass may qualify under this PFC where nutrients are in organic form.
• PFC 3 — Soil improver: algae-based materials (e.g. dried seaweed meal, composted algal biomass) used to improve soil physical, chemical or biological characteristics may qualify under this PFC.

Requirements in each PFC include nutrient declarations, labelling, contaminant limits (cadmium, lead, mercury, arsenic, chromium, and others as specified in Annex I) and, for biostimulants, efficacy claims substantiation requirements.

The FPR also defines which materials may be used as constituents of EU fertilising products through Component Material Categories (CMCs) in Annex II. The CMCs most relevant to algae are:

• CMC 1 — Virgin material substances: covers primary nutrients and micronutrients in simple mineral or salt form; limited direct relevance to algae.
• CMC 2 — Plants, plant material, and plant-based products: covers materials of plant origin used as fertilising product inputs. The legal status of algae under CMC 2 is a key question: as discussed elsewhere in this wiki (see Agriculture and Land-based Cultivation and Customs Classification and Trade), the EU Combined Nomenclature classifies algae as vegetable products (Chapter 12, heading 1212), which supports their inclusion under CMC 2 as “plant products”. This interpretation is increasingly accepted in practice.
• CMC 6 — Plant biostimulants registered in the EU prior to the FPR: a transitional category for biostimulants already on the market; being phased out.
• CMC 12 — Recovered high purity materials (pyrolysis and gasification materials) and related CMCs: less directly relevant to algae but include some algal biomass-derived biochar pathways.

Commission Delegated Regulation (EU) 2022/1171 adding recovered high-purity materials as a CMC. EUR-Lex

Commission Delegated Regulation (EU) 2024/2516 on digital labelling of EU fertilising products. EUR-Lex

The CMC framework is under ongoing development; new CMCs covering additional algal and organic material categories are expected as the FPR continues to evolve. Producers should monitor the Commission's work on FPR revision closely.

PFC 6 biostimulants must have their claimed effects documented — the FPR requires that the claimed beneficial effect on the plant (nutrient use efficiency, stress tolerance, quality, etc.) be specified on the label and substantiated. For algae-derived biostimulants, the scientific evidence for biostimulant activity has grown substantially in recent years, with commercial experience of liquid seaweed extracts (primarily from Ascophyllum nodosum and Ecklonia maxima) being the most established. Regulators implementing the FPR expect documentation of the biostimulant effect under relevant EU growing conditions.

Note that a biostimulant claim under the FPR is not equivalent to a plant protection claim under Regulation (EC) No 1107/2009 (Plant Protection Products Regulation, PPR). If an algae-derived product is marketed with a claim to protect against a plant pest or disease, it crosses into plant protection product territory and must be authorised under the PPR, a much more demanding pathway. The boundary between “biostimulant” (FPR) and “plant protection product” (PPR) can be unclear in practice.

Annex I to the FPR sets binding contaminant limits (cadmium, lead, mercury, arsenic, chromium VI, biuret, PAH, dioxins, PCBs, pathogens) that must be met by all EU fertilising products. For algae used in organic fertilisers or soil improvers, the heavy metal contaminant limits in Annex I are the most practically significant — algae with bioaccumulated heavy metals from their growth environment may fail these limits. Testing is essential before any CE marking claim is made.

Where algae-derived fertilising products are to be used in organic farming, they must additionally comply with Annex II of Regulation (EU) 2018/848 (the EU organic regulation), which lists permitted inputs for organic crop production. The permitted product list for organic farming is more restrictive than the FPR's full CMC scope. Products CE-marked under the FPR are not automatically permitted for use in organic farming; separate compatibility with Regulation (EU) 2018/848 permitted input lists must be established. This is an area of active regulatory discussion within the EU organic sector.

As noted above, national fertiliser/biostimulant authorisation systems continue to exist alongside the FPR's CE marking system. Producers supplying national markets rather than seeking EU-wide harmonised access may find national authorisation systems faster and less complex for initial market entry, particularly in markets with established national systems for biostimulant registration (e.g. Spain, France, Italy). However, a product placed on national markets under national law cannot bear the “EU fertilising product” CE mark.

• Determine your PFC — the product function category determines what efficacy, labelling and contaminant requirements apply; biostimulant claims (PFC 6) require efficacy substantiation, while soil improver (PFC 3) or organic fertiliser (PFC 1) classifications may be more appropriate for unprocessed or minimally processed algal biomass inputs.
• Confirm CMC eligibility — establish whether your algae material qualifies under CMC 2 (plant/algal biomass) or another applicable CMC; the FPR FAQ document published by DG GROW provides useful guidance.
• Test for Annex I contaminants before CE marking, particularly heavy metals — this is a binding legal requirement and cannot be skipped.
• Biostimulant vs. plant protection product boundary — if marketing any pest or disease control effect, seek legal advice on the biostimulant/PPP boundary before making public claims.
• For organic market use, additionally verify compatibility with Regulation (EU) 2018/848 Annex II permitted inputs — CE marking under the FPR does not guarantee organic farming eligibility.
• Track FPR revisions — the CMC list and contaminant limits are being reviewed; new opportunities (and possibly new constraints) for algae-derived products are expected in the coming revision cycle.

See also: Agriculture and Land-based Cultivation | Waste, Wastewater, Nutrient Recovery and End-of-Waste | Organic Production and Other Certifications | Animal By-products | Customs Classification and Trade

Last reviewed: June 2026.