RGP

Quality of            
Growing Media 
Matters

RHP has been the European knowledge centre for growing media since 1963 

RHP certified substrates provide an optimal start of the culture. With the RHP quality mark you increase the security that the substrate complies with the quality requirements concerning for instance water uptake, air content, pH, EC and nutrients. It also offers more security that the substrate is pure and clean and that it can be used without risks for the culture. The RHP quality mark monitors the quality of growing media in the chain, from raw materials production until processing and delivery at the company of the user.
Watch video: RHP quality mark for substrates

NEWs

current NEWS ABOUT substrates, SOIl Research and workshops

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agenda

  • March 20th - meeting Product Group Mineral wool
  • March 29th - meeting Supervisory Board
  • April 4th - technical meeting Riga
  • April 11th - meeting Product Group Horticulture
  • May 24th - meeting Technical Commission
  • May 24th - meeting Product Group Peat
  • January 24th 2020 - meeting Product Group Landscaping

Facts & Figures

The knowledge center for substrates in Europe

certified
locations
399
Quality 100%
PRODUCT analyses 10.426
certified
product
9200K m³

Knowledge Base

The ins and outs of substrates: from WOK to respiration and from potting reference to pH

certified products

Raw materials and end products classified per field of application