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

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,…
Coronavirus COVID-19

Coronavirus COVID-19

Dear Relation,   The world is experiencing difficult times due to the pandemic CORONA spreading. As you, we also never experienced such a global crisis but we try to do the best we can to be of service to you as long as possible. As many other countries as of today The Netherlands is also in lockdown due to the spreading of the CORONA virus.…
Annual shutdown

Annual shutdown

We would like to inform you that our Annual shutdown is from the 23rd of December until the 6th of January. Please note that orders before the 13th of December will be delivered according to our normal terms of delivery. Orders placed after the 13th of December will be delivered in the third week of January. Ad Terram would like to wish you a Merry…

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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