How do you know whether a substrate is RHP‑ or RAG‑certified?

8 may 2026

You receive a substrate delivery at your company. Where can you see whether this substrate falls under RHP or RAG certification?

Substrates delivered under RHP or RAG certification can always be identified by a reference on:

• the packaging, or
• the delivery note, or
• the invoice.

This reference is shown either by the name RHP or RAG, or by the corresponding logo.

For some products, the field of application is also stated.

• For RHP‑certified substrates, relevant fields of application include RHP Horticulture and RHP Mushrooms. If no field of application is stated, the product meets the requirements for RHP Horticulture.
• RAG‑certified substrates are supplied for the following applications: RAG Landscaping, RAG Green Roof and RAG Soil improvement.

If you want to verify whether a product from a supplier is delivered under RHP or RAG certification, you can find this in the overview of certified products. For each product, the page clearly states which companies supply this raw material or end product under certification. You can view all certified products or filter them by field of application.