Natural small diatomite rocks help improve drainage and reduce root rot, and they are one of the best soil rocks for a terrarium.

It is porous, allowing good drainage. After spraying water, the small rocks will become sticky and stay in place.

This soil is made in the shape of small rocks. In a moss terrarium, you can use gardening soil instead of it. But this is the most neat one I ever used.

The layers of a terrarium from the bottom up: small lava rocks (or any other porous rocks) < sphagnum (for absorbing water) < soil (this diatomite rocks or other soil in your hand).

Suitable for potted plants, jars, terrariums, best home decor, DIY projects, and fairy gardening.
It is ideal for various plants, like moss and succulents.
Size: 1-3mm

Weight: 700g/ 1.54lb