Delayed-release nutritional mushroom-supplement. For professional mushroom-growers.

16 km from Horst
MCSubstradd® (a HAVENS-trademark) is produced at a dedicated part of the HAVENS-site in Maashees, Netherlands, only 15 km away from Horst, capital of the european Mushroom-industry.
New improved MCSubstradd® formulas now with spectacular new ECO-PRO Coating for 3% - 5% better yield. Please contact our MCSubstradd® staff.


MCSubstradd® is a new name for an old and proven product.

Since 2008, MCSubstradd® regroups 2 existing brands for mushroom-supplements: MilliChamp® and Substradd®.

MilliChamp® started in the 1970's, based on a patent for production and use of delayed-release proteins. Since its start, MilliChamp® has been a reference in the mushroom-industry, famous for its quality, advanced research and innovation. Substradd® was developped by Mr. Wim Joosten, another pioneer and field-expert in mushroom-supplementation.

In 2008 both brands have joined forces in MCSubstradd®, the new brand-name.

MCSubstradd® is produced at a separate part of the large HAVENS-site on the Meuse-river in the south of the Netherlands, where it has been manufactured since the early 1990's in a 100% dedicated production-unit, from reception of the ingredients right up to filling of the bags or bulktrucks.

Thus, MCSubstradd® combines cost-effectiveness to optimal product-quality. As part of HAVENS NV, MCSubstradd® can use all available research-facilities within the company. All mushroom-related projects are supervised by HAVENS Research staff.

All MCSubstradd®-products are based on delayed-release protein-technology, developped in the 1970's and further improved eversince.

Over the years, we have been engaged in numerous experimental- and field-test at the Mushroom Experimental Stations in Horst (the Netherlands; 'Proefstation voor de Champignoncultuur'), Roeselare (Belgium; 'Proefcentrum voor de Champignonteelt'), Kennett Square (USA) and in the Loire-valley (France).

Since the early 1990s, the production of all MCSubstradd®-supplements is HACCP-certified.

MCSubstradd®-supplements are made for professional mushroom-growers and/or compost-producers. For more information, contact our MCSubstradd®-staff:

MCSubstradd® Mushroom supplement
Mgr. Geurtsstraat 41
5823 AC Maashees
The Netherlands

Tel. +31 478 638 238
Fax +31 478 638 239

Mr. Wim Joosten:
Tel. +31 6 5322 3595

Mr. Bart de Leeuw
Tel. +31 6 4637 1621

For orders or information about logistics, please contact:

MCSubstradd® production & logistics
Mgr. Geurtsstraat 41
5823 AC Maashees
The Netherlands

Tel. +31 478 638 225
Fax +31 478 638 223