8 March 2017 7:54pm – Hot Composting

Limestone Permaculture┬áhave re-shared their hot composting info to┬átheir Facebook page, but for those who don’t have Facebook, I think its worth transcribing here.

If you have the space, this is a great way to compost a larger quantity of material.

“So just started up another batch of Hot Compost in my new Pallet Compost Bays and thought i would pass on the following for those interested :)

The ‘Hot composting’ 21 day method produces compost in a much shorter time frame than cold composting (6 months to a year) with the added benefit of killing weed seeds & pathogens (diseases), minimal loss in heap volume and the end result being a more finer compost material. (All of which cold composting does NOT do.)

If ratio of C:N is right then this fast, aerobic (uses oxygen) hot compost will break down to nearly the same volume as what you started with. This is in contrast to slow, cold, anaerobic (without oxygen) compost which drastically reduces in volume as it rots over a long period of time.

The requirements for hot composting are similar to the Berkley method and are as follows:
– Compost temperature is maintained between 55-65 degrees Celsius
– The C:N (carbon:nitrogen) balance in the composting materials is approximately is approx 2/3 carbon (brown) to 1/3 nitrogen (green)
– The compost heap needs to be roughly 1m to 1.5m high & 1m minimum square.
– If composting material is high in carbon, such as tree branches, they need to be broken up, such as a wood chipper.
The Compost is turned from outside to inside and vice versa to mix it thoroughly every three days.

Limestone – 21 day Hot Compost > favourite ingredients
(in no particular order)
– Grass hay
– Lucerne hay
– Pea Straw
– Comfrey
– Shredded corn stalks
– Shredded Bana Grass
– Fresh mowed grass
– Old dry mowed grass
– Garden waste
– Coffee grounds
– Chipped Mulberry branches
– Chicken manure mixed with fine wood shavings
– Chicken manure tea
– Sheep and Goat manure
– Cow manure
– Wood ash (kept from winter fires)
– Blood & Bone
– Kelp powder
– Molasses
– Probiotic juice
– Water (hose in ever few layers)”

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