I have a flower bed which I plant annual flowers. I put mulch on the
flowers. Each fall when the flowers dies, I dig the flowers into the soil,
and then dig my leaves into the soil. Does this mean my soil getters better
each year since nothing leaves the bed in the sense that I recycle the dead
flowers. Or am I missing some? The flowers or plants give off oxygen so does
some chemical get lost in the process.

Thanks

Tom