29/11/2012 at 17:28
Yes, is the short answer.
Some years, eg last, I couldnt start my 'bean trench' for this yrs' crop until the next Spring. Ok, not all the vegetable waste that I'd used had completely rotted down, but by the time I dismantled the wigwam in late summer- very bad yr for growing for me- no sign of the trench filling remained & the soil was in good condition.
I now try & adopt the trench policy to improve any new bed that I start, which is usually from removing more of the lawn! J.