We’ve now got two compost bins, one (right) is the working bin and the other (left) is the maturing bin.
When the working bin is full it is turned over into the maturing bin – i.e. the top of the working bin gets put into the bottom of the maturing bin leaving the oldest compost at the top. We can use this compost from the top whilst the bottom of the bin continues to compost. The working bin can then be filled up with new material and the process can be repeated.
Big lumps of grass cuttings don’t compost very well, they tend to turn into layers of anaerobic slime. Normally I try and cut the grass often, taking less than a third off the blades means I don’t have to use a grass box and the cuttings will break down in the lawn giving the nutrients back. When the grass is growing faster and opportunities to cut it are less – mostly in spring and autumn – then I’ll collect the cuttings, put them in a pile next to the boxes and then put them into the working box in small batches so it gets mixed through.
As a bonus, some of the potatoes we’d put into the compost had grown so we have an unexpected harvest.