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A trench approx 1 metre long by 30 cm deep Q. Once the food scraps have finished fermenting how deep does it need to be buried in the soil? Also how long do I have to wait before I can add more material into the same area of garden?

A.  A trench approx 1 metre long by 30 cm deep and 30cm wide is sufficient to bury the contents of a 15 litre bucket full of fermented food waste. This should be covered over with 75mm –100mm of soil. To speed up the process it helps by sprinkling a little soil over the waste before covering and using a sharp spade ‘cut’ some soil down into the food to allow some mixing.

You should be able to repeat the process again within around 6 weeks and this is a great way to build up a poor soil with repeated applications.