Exo Terra Rain Forest Substrate

The Exo Terra Rain Forest Substrate is a 100% natural, biodegradable terrarium substrate blended from sustainable Maritime Pine bark and Sphagnum moss. Designed specifically for humidity-loving reptiles, amphibians, and invertebrates from tropical rainforest environments, it delivers both a naturalistic aesthetic and genuine functional benefit to the enclosure.

Composition and Natural Origin

The substrate combines Maritime Pine bark particles with natural Sphagnum moss to create a hygroscopic mixture that actively manages moisture within the terrarium. Both materials are sustainably sourced and fully biodegradable, making this a substrate you can use with confidence in naturalistic and planted setups alike.

Humidity Regulation

One of the core functions of this substrate is its ability to absorb water and release it gradually back into the enclosure atmosphere. The addition of Sphagnum moss maximises this hygroscopic effect, helping to maintain stable ambient humidity levels. Consistent humidity supports healthy shedding and reduces the risk of respiratory issues in tropical species.

Planted Terrarium Performance

The size and shape of the bark particles work alongside the moss component to allow effective irrigation of live plants without waterlogging the root zone. Adequate aeration through the substrate encourages healthy root growth, making this a practical choice for keepers building bioactive or planted vivarium set-ups.

Heat-Treated for Safety

The substrate is heat-treated during production to reduce bacterial contamination, giving an added layer of hygiene assurance before it even enters your enclosure. This is particularly relevant when housing sensitive species or establishing bioactive builds where substrate health matters.

Available in Multiple Sizes

Rain Forest Substrate is available in a range of bag sizes to suit enclosures of different scale — from smaller tropical set-ups through to large bioactive vivariums requiring a deeper substrate layer. Select the appropriate size for your enclosure from the options on this page to ensure you have enough coverage for the depth your species requires.