Our Biostimulants give your plants strength and a higher tolerance against abiotic stress factors. 


Ad Terram has developed an organic filmcoating free of intentionally added microplastics. 

Encrusting & Pelleting

For encrusting and pelleting Ad Terram has special binders and powders who can be used in both the organic and conventional market. 

Crop Support

Ad Terram Crop Support is specialized in leaf, bulb and soil treatments. For more information visite their website. 

We use no chemicals, synthesized products or intentionally added microplastics

Organic coating will support your valuable products much better!

Our company is focusing on the research and innovation of technologies and own developed (organic) seed treatment products in the agricultural sector. 

Beside seed treatments we develop Biostimulants for leaf, soil and bulb treatments. Our Biostimulants enhance the uptake off micro nutrients and increase the development of roots and cell structures which leads to a much stronger start of the plants.

Latest News

The Ad Terram truck

The Ad Terram truck

Ad Terram is always on the move! This truck with our logo on it can be spotted in ‘Noord-Holland’ and ‘het Westland’ (provinces in The Netherlands). 
OMRI Certificate

OMRI Certificate

We are very excited to announce that Ad Terram USA received the OMRI certificate for our Sapphire seed coat. OMRI is a 501(c)(3) non-profit organization in the US that provides an independent review of products, such as fertilizers, pest controls, livestock health care products, and numerous other inputs that are intended for use in certified organic  production and processing. Sapphire seed coat can be used…
Organic certification Ireland

Organic certification Ireland

The products of Ad Terram are certified organic by Organic Trust CLG in Ireland. The Organic Trust is the centre of excellence when it comes to organic inspection and certification in Ireland.  The Organic Trust Symbol under the Certified Products Scheme has been awarded to: Optimum Leaf Concentrate; Sapphire Seed Coat; Sapphire Seed Coat Premix; Optimum Flow; Optimum Contact; Optimum Bulb Concentrate;  Circumeo 60, 90,…

We are an innovative company focusing on the research of own developed organic treatment products and technologies in the agro-industry.

We make high-end products
which are 100% organic.

Get in contact with Ad Terram and let it grow

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Contact us!

Ad Terram is reachable by phone or by email. We are situated in Opmeer, The Netherlands. You can find all our contact information at the contact page.

  • +31 (0)228 593813

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