How Fine Are Pine Bark Fines?
I can buy Better-Gro Orchid Bark. It is made of fir bark (which is a conifer, but not a pine), and it looks like chunks to me about the size of my fingernail on my thumb. How fine does the bark have to be to qualify as pine bark fines?
Here is a link that might be useful: Better-Gro Orchid Bark