---
title: Sandstone in a terrarium | Glass Jar Garden
description: Sandstone: Soft layered stone that soaks up water. In the jar it has holds water 9 % by volume, pore space 15 % by volume, weight 1400 g/L.
url: https://glassjar.garden/guide/hardscape/sandstone/
---

Stones and wood

# Sandstone
Reusable

Soft layered stone that soaks up water.

## What the simulation uses

- Holds water: 9 % by volume (Water it keeps after draining; the rest runs down to the drainage.)

- Pore space: 15 % by volume (Room for air and water between grains; low means roots suffocate when wet.)

- Weight: 1400 g/L (How heavy a litre is.)

- pH: 7 to 8.5 pH (How acid it keeps the soil.)

- Mould risk: none (How much fresh food it gives white mould; high-risk soils fuzz over in the first weeks.)

- Nutrients: none (Plant food it brings.)

## Description
Sand grains cemented together into a porous stone that wicks water. Silica-cemented sandstone is inert, but the common lime-cemented kind can raise pH. A drop of vinegar tells you which you have.

Also called sand stone.

Estimated, where sources were thin: porosity estimated 5-25%; cement type decides pH effect.

## Sources

- [en.wikipedia.org/wiki/Sandstone](https://en.wikipedia.org/wiki/Sandstone)
- [engineeringtoolbox.com/density-solids-d_1265.html](https://www.engineeringtoolbox.com/density-solids-d_1265.html)
- [engineeringtoolbox.com/density-materials-d_1652.html](https://www.engineeringtoolbox.com/density-materials-d_1652.html)

[Grow it in a jar](https://glassjar.garden/?guide=hardscape/sandstone)

[Ryuoh stone](https://glassjar.garden/guide/hardscape/ryuoh-stone/) · [Seiryu stone](https://glassjar.garden/guide/hardscape/seiryu-stone/) · [All stones and wood](https://glassjar.garden/guide/hardscape/)