Twigs as a compost bin base layer
When filling a compost bin, which is going to depend on passive aeration it is recommended that the base layer consists of browns preferably coarse materials such as sticks, twigs, bark so as to allow air to filter into the centre of the heap. This also assists in drainage. Others, including me, use vegetable stalks e.g. brassica (crushed), Jerusalem artichoke or some flower stalks, or crumpled cardboard which will decompose more quickly than wood.
I have avoided twigs and sticks in the bottom of plastic bins, where the compost will be harvested through a hatch, as the wood makes it more difficult to extract the finished compost but have used them in larger wooden bins where the compost is not to be turned.
This month we had a load of twigs, raspberry canes, and pruning’s for vines so I decided to use them , as they were submitted (up to 12 inches in length) as a base layer in a bin was to be turned regularly knowing that the initial turning would distribute the twigs throughout the bin. The photo shows the first turn with many of the twigs in the upper layers.
The twigs certainly made it heavier work turning the compost using a fork and to break up any lumps that were forming but may aid air circulation within the bin.
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Very informative site. Having been away for 5 weeks and returning to evidence of rats under and around the compost bin, I can testify to lack of human activity allowing the rats to get comfortable.
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