The following businesses can obtain a HORTICERT certificate for their products:

• Farms vary from small farms (Smallholders) to Medium to Large Farms and supply their commodities directly or through Traders to a First Traceability Checkpoint.
• Forestry Operations are units that manage forests or woodlands and supply their log directly or through Traders to a sawmill.
• Collecting Points are units that collect or receive waste or residues from municipalities, communities or potential other sources for further processing, trading or distribution.
• Sub-Processing Units are Processing Units that are a member of a Group Certification (e.g. de-husking sites, mills, washing sites, other subcontractors).
• Processing Units produce growing media components from raw materials. Often, raw materials pass through various Processing Units until a finished component is produced. Examples of Processing Units include sawmills and wood fiber plants for the production of wood-based peat substitutes, composting plants for the production of green compost or composted bark, and plants for the dehusking and defibering of coconut-based peat substitutes.
• Growing Media Mixing Plants are units that produce final growing media products from one, two or several components (usually with the addition of fertilizer and liming material). Often, Growing Media Mixing Plants also have Processing Units for the production or further processing of peat substitutes for their own growing media production. 
• Traders are entities that buy and sell raw materials or growing media components (not final products). They manage warehouses and thus have a storage unit and do not sell to end consumers. Paper Traders operate a pure drop shipment business without physically obtaining the material; they do not operate or have warehouses or storage facilities. Traders / Paper Traders do not have to be certified but will have to use the digital traceability tool HORTI-TRACE.

The following additional roles exist to define further System User characteristics:

• First Traceability Checkpoints typically receive raw materials from multiple farms or Forestry Operations. They are the first units in the supply chain to use HORTI-TRACE and can be either Collecting Points or Processing Units such as a sawmill or composting plant.
• Group Managers are the representative entity acting on behalf of Group Members in the context of Group Certification in coir supply chains and holding the common HORTICERT Certificate. Group Managers are Processing Units.
• Final Product Refiners are units that sell HORTICERT certified products to end users (consumers or business). Final Product Refiners can be either Growing Media Mixing Plants or Processing Units