Most orchids are grown in a mix that's primarily composed of bark chips. Sometimes bark chips are also a component in soil mixes for other plants.
As I was stacking firewood, I realized I happen to have a fairly large supply of bark. It tends to be from temperate forest trees - sometimes from pines, sometimes from hardwoods. It breaks off fresh firewood all the time. It's not rotten, since the trees have been recently felled.
Is there anything wrong with breaking up this bark, baking it to kill pathogens, and growing orchids in it? Any potential hazards to making my own bark chips?