Bruce at RED Gardens has found double-dug gardens to be more productive:
There are concerns with it, of course.
- Disrupts soil layers
- Destroys microbial and fungal life
- Is labor intensive
- Is not something you see in nature
Yet I cannot argue with the results. Our double-dug beds have always done well. Always. There has never been a time where I put in the effort to double-dig and then said “man, that wasn’t worth it!”
It may be, as Bruce notes, that double-digging initially to clear rocks and remove soil compaction followed by using a no-till or other method may be a better practice than breaking the soil again year after year.
More experiments – as always – are in order.