This Bark is approx. 25 to 50mm. 

It is the largest size we produce. 

Available in 50 Ltr clear Kiwi Orchid Bark bags.

Used for genera where the larger plants should
be allowed to dry out between each application 
of water eg; Cattleya.

Also can be placed on the bottom of a pot for
increased drainage where grade2,3 or 4 is used.