The substrata of a cactus pot is ideally composed of pieces of broken bricks at the bottom, charcoal above it, then coarse sand and pebbles above it.

However many other kinds of substrata are also used, for example, saw dust, sacks, banana leaves, dry mango leaves, coconut leaves, sugarcane, wild grass, rice husk, etc.

The mushrooms should not be pulled out because the substrata will also be pulled out with it.

If the substrata is dry the bag should be given a quick dip in water.

This is because after 4 crops the substrata begin to attract disease and get contaminated.

To prevent the occurrence of nematodes, the substrata should be constantly changed-it should never be older than six months to one year.

Problems of substrata languages enter at this stage.

Red coral was forming immovable groves on the substrata of the Balearic Islands, and on the coasts of Naples and Africa.

The very soil and substrata are characteristic.

In other words, matter and spirit are but names for the imaginary substrata of groups of natural phenomena.