White stuff below ground
I was going to plant basil next to my chile de arbol plant, and when I dug up a hole I found a loose ground with white stuff, as can be seen on the pictures.
The chile de arbol plant was originally in a large pot that I had filled with a pre mixed potting mixes with peat moss, coconut fiber and pine bark, and I then put everything on the ground about a year ago.
What is the white stuff? is it a problem, or parts of the potting mix breaking down normally?