Think of it like fertilizer. It gives a big boost initially and then the effects fade as time goes on.
I personally put it in when I till and occasionally put a bit more around roots part way through the growing cycle. As I have multiple seasonal garden areas and projects I continue to use it most of the year. Even when I didn't use it that much the only time I had it get piled up was in the fall time when composting lots of leaves.
I personally put it in when I till and occasionally put a bit more around roots part way through the growing cycle. As I have multiple seasonal garden areas and projects I continue to use it most of the year. Even when I didn't use it that much the only time I had it get piled up was in the fall time when composting lots of leaves.