Blue Spotted Deep Jungle Terrarium Bark 1/4 inch to 3/8 inch - 40 liters Terrarium Substrate/Reptile Bedding and Growing Orchids Deep Jungle Terrarium Bark 1/4 inch to 3/8 inch - 40 liters Terrarium Substrate / Reptile Bedding and Growing Orchids Use for pet habitat substrate AND/OR for growing orchids. Deep Jungle Bark is naturally decorative, washable, and reusable. Deep Jungle Bark gives consistent hydration, an ideal wet/dry cycle and provides excellent longevity. What makes Deep Jungle Bark unique is the proprietary aging process which results in superior performance when compared to raw pine bark. The aging process destroys pathogenic micro-organisms while at the same time promoting the formation of beneficial organisms such as Penicillium and Trichoderma. Deep Jungle Bark is a sustainable growing medium produced from the finest quality, 100% pure New Zealand Pinus radiata bark. Pinus radiata is sourced from renewable, man-made forests ensuring availability into the future.