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 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.

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RHP Certified for Horticulture coir products, peat, growing media (to: all certified products)

 

*** VACANCY: manager Technical Advisor (32-40 hours) ***

*** VACANCY: manager Responsible Sourcing (32-40 hours) ***

NEWs

current NEWS ABOUT substrates, SOIl Research and workshops

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agenda

  • March 10, 17, 24, 31 and April 7, 14 - Training Growing Media A (Dutch)
  • March 19 - Training and harmonisation day for auditors of the quality marks RHP and RAG 
  • March 23 - meeting Supervisory Board 
  • April 1 - meeting Product Group Mineral wool
  • April 7 - meeting Product Group Mineral products
  • April 7 - meeting Product Group RAG Landscaping/Soil improvement
  • April 8 - meeting Product Group Coir products
  • April 17 - meeting Product Group End products Consumer
  • April 22 - meeting Product Group Compost
  • April 23 - webinar on Presciption
  • May 6 - meeting Product Group Organic products
  • May 8 - meeting Product Group Peat
  • May 12 - meeting Product Group Fertilizers and lime
  • May 19 - meeting Product Group End products Horticulture
  • May 26 - webinar on Presciption
  • June 5 - meeting Technical Committee 
  • June 15 - meeting Supervisory Board 
  • June 25 - RHP Research Update (webinar for certified companies)
  • July 8 - meeting Central Board of Experts 
  • September 28 - meeting Supervisory Board
  • November 3, 10, 17, 24 and December 1, 8 - Training Growing Media B (Dutch)
  • November 4 - meeting Product Group Mushrooms
  • November 27 - meeting Technical Committee 
  • December 3 - RHP Research Update (webinar for certified companies)
  • December 10 - meeting Supervisory Board
  • December 18 - meeting Central Board of Experts 

Facts & Figures

The knowledge center for substrates in Europe

certified
locations 428
Quality 100%
PRODUCT analyses 15.052
certified
product 11.000K m³

Knowledge Base

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

Gecertificeerde producten

Alles wat u moet weten over substraat van wok en respiratie tot de oppotreferentie

Raw Material
End Product
Acrotelm
Acrotelm Companies
Raw Material
End Product
Bark (Horticulture)
Bark (Horticulture) Companies
Raw Material
End Product
Bark (Landscaping)
Bark (Landscaping) Companies
Raw Material
End Product
Clay
Clay Companies
Raw Material
End Product
Clay granules
Clay granules Companies
Raw Material
End Product
Coir products
Coir products Companies
Raw Material
End Product
Compost
Compost Companies
Raw Material
End Product
Composted bark
Composted bark Companies
Raw Material
End Product
Fertilizers
Fertilizers Companies
Raw Material
End Product
Green Roof substrate
Green Roof substrate Companies
Raw Material
End Product
Growing media
Growing media Companies
Raw Material
End Product
Lime products (Horticulture)
Lime products (Horticulture) Companies
Raw Material
End Product
Lime products (Mushrooms)
Lime products (Mushrooms) Companies
Raw Material
End Product
Mineral wool
Mineral wool Companies
Raw Material
End Product
Mulch
Mulch Companies
Raw Material
End Product
Mushroom casing
Mushroom casing Companies
Raw Material
End Product
Peat (Horticulture)
Peat (Horticulture) Companies
Raw Material
End Product
Peat (Landscaping)
Peat (Landscaping) Companies
Raw Material
End Product
Peat (Mushrooms)
Peat (Mushrooms) Companies
Raw Material
End Product
Perlite
Perlite Companies
Raw Material
End Product
Plugs and other small preformed growing media
Plugs and other small preformed growing media Companies
Raw Material
End Product
Potting soil
Potting soil Companies
Raw Material
End Product
Pumice stone
Pumice stone Companies
Raw Material
End Product
Rice hulls
Rice hulls Companies
Raw Material
End Product
Soil supply/garden soil
Soil supply/garden soil Companies
Raw Material
End Product
Spent substrate
Spent substrate Companies
Raw Material
End Product
Sphagnum (protected cultivation)
Sphagnum (protected cultivation) Companies
Raw Material
End Product
Topsoil substrate
Topsoil substrate Companies
Raw Material
End Product
Tree substrates
Tree substrates Companies
Raw Material
End Product
Vermiculite
Vermiculite Companies
Raw Material
End Product
Wood fibre
Wood fibre Companies