Biostimulants for Professional Growers and Private Label

FertiQi is a biostimulants supplier and producer for licensed growers, cannabis social clubs, fertilizer brands and distributors. We develop, produce and fill every product in-house. Our range covers amino acids, enzymes, humic and fulvic acids, seaweed extracts and mycorrhizae – for organic programmes, for mineral programmes that need extra support, and for premium product lines under your own label. As the producer, we supply them directly, independently tested and documented per batch.

Why choose FertiQi as your biostimulants supplier

Biostimulants are often sold as premium additives with a premium price. We produce them in-house in Vilassar de Mar near Barcelona, so you buy the active compounds directly – without brand marketing and distributor layers on top. That gives you three advantages:

  • Known active compounds – you know what is in the product, at which concentration, and you receive a certificate of analysis (COA) and Safety Data Sheet (SDS) with every order.
  • Adapted to your program – we look at your base nutrition, substrate and system and propose the biostimulants that fit, instead of a one-size-fits-all bottle.
  • Stable quality – every batch is independently tested, so what worked in one cycle is what you receive in the next.

Our biostimulant range

As a biostimulants supplier, we cover the main product groups used in professional horticulture:

  • Amino acids – free amino acids as a readily available organic nitrogen source, used in growth and stress phases.
  • Enzymes – for the root zone and substrate, often used in recirculating systems and when reusing substrate.
  • Humic and fulvic acids – to support nutrient availability in the root zone, for mineral as well as organic programmes.
  • Seaweed extracts – natural extracts that are widely used as a biostimulant in horticulture.
  • Mycorrhizae – beneficial fungi for soil and living soil systems.
  • Root stimulators – for rooting, transplanting and the early growth phase.
  • Organic inputs – organic NPK and living soil substrates for growers who work fully organically.

How biostimulants fit into a feeding program

In the EU, plant biostimulants are defined in the Fertilising Products Regulation (EU) 2019/1009 as products that stimulate plant nutrition processes independently of their nutrient content. In other words: biostimulants do not replace base nutrition – they work on top of it. The right base fertiliser comes first; biostimulants are added deliberately, in a defined phase and at a fixed dose. Their effect depends on crop, system and conditions, so we recommend introducing them one at a time and comparing the results with previous cycles. That way you know what each product contributes. Read more in our guide on building a consistent cannabis feeding program and in our article Biostimulants: boosting plant growth naturally.

Many growers combine biostimulants with our base fertilisers and with stabilised orthosilicic acid. The complete range is on our cannabis nutrients page.

Biostimulants under your own label

All biostimulants are available for private label filling. Fertilizer brands and distributors use them to add a premium or organic line to their range without their own production. We fill in bottles and cans from small retail sizes up to bulk, with your label and your brand. See private label fertilizer production for the process.

Who we supply

Order quantities and delivery

  • 25 L – trial size and minimum for specialty actives and biostimulants.
  • Larger volumes – regular deliveries up to IBC once you are confident in the product.

We ship from our warehouse in Wachtendonk, Germany, and from our production site near Barcelona.

Frequently asked questions

Can I add biostimulants to my current nutrients?

Yes. Biostimulants are usually added to an existing base nutrition program. Tell us what you use now and we advise which products fit and how to introduce them.

Are organic inputs available?

Yes. Humic and fulvic acids, seaweed extracts, mycorrhizae, organic NPK and living soil substrates are available for growers who work organically.

Can I test before I order larger volumes?

Yes. You can start with 25 L per product and scale up once you have seen the results in your own grow.

Request a biostimulant proposal

Tell us about your crop, substrate, system and current products. We come back with a concrete proposal. Email info@fertiqi.com, call +34 932 53 97 24 or use the contact form.