Gardening

Hard Akadama soil

Medium grain

It is a size that is often used, such as being used as a pot bottom stone or mixed with potting soil.
The size is about 6 to 10 mm. I often put medium grains on the surface of the pot to prevent the occurrence of crumbs and to use it as a measure of whether there is enough water.
It can be mixed with potting soil, but it has more water retention than large seeds, but it lacks water retention compared to small seeds.