Chunkier pieces for stronger structure and airflow.
These 9-13mm bark nuggets are a step up from the finer 4mm grade—bulkier and more rigid, perfect for when your mix needs a bit more lift and structure. The larger size creates extra air pockets, improving drainage and preventing soil compaction around the roots.
Ideal for aroids, orchids, and semi-hydro or bioactive setups that benefit from chunkier, longer-lasting components.
 
Great for:
• Aroid and orchid soil blends
• Indoor tropical plants (Monstera, Alocasia, etc.)
• Terrarium base layers
• Reptile-safe substrate (not bedding)
 
Benefits:
• 9-13mm chunky bark pieces
• Adds bulk and airflow to mixes
• Helps roots anchor and breathe
• Organic, long-lasting, and untreated
A great middle ground—less fine than the 4mm, but not as coarse as the 9mm. Strong support for strong root systems.