In my case I was decomposing my previous life as a teacher
1. Hot composting Why and how to make it – my experience
2. Any compost = Lush vegies
3. 3 bin system using chooks
4. Ideas for 3 bin system
5. What is hot composting?• A batch process: mix it all at once from material you have collected• It is free• Unlike other methods of composting it kills weed seeds and pathogens• Can deal with meat, dairy, onion and citrus scraps
6. Scientific definition• “An aerobic process of• fast oxidation which• breaks raw organic materials into• humus• at temperatures of up to 60°C• within three weeks”
7. What goes in it?Green and brownGrass clippings leavesCoffee grounds strawManure sawdustKitchen scraps shredded paperGarden waste Tissues, cardboard rolls
8. Why hot compost?• Improves soil structure and adds nutrients• It is quick. Finished compost in a few weeks• Higher nutrient content due to less leaching of nutrients• Greater volume than cold compost• Fewer viable weeds and weed seeds (keep out couch and kikuyu)
9. Dealing with perennial weeds• Weeds like couch and kikuyu can be either solarised or drowned.Either• put them into heavy black plastic bags and leave in the sun for several months.Or• put them in a bin and cover completely with water for several months.The resulting contents can then be composted.
10. How to make hot compost• One third green• Two thirds brown• 3 bin system• Layer the materials and water each layer well• Every so often add comfrey leaves or yarrow• When finished cover the top with damp newspaper and cover with lid
11. • After 4 days turn into next bin• After 2 weeks build another pile• Then regularly turn each of the piles into the adjacent bins• You will have a regular supply of compost depending on how long your materials last and how diligent you are at collecting
12. Tips and tricks• Watch out for people giving away compostable materials e.g. horse manure, coffee grounds, chicken manure• Collect leaves from the sides of roads• Ask people for their lawn clippings• Get shredded paper from the office if you can• Dampen newspaper and tear into strips
13. • Ask juice bar owners if you can have the pulp from juicers if you are there at cleanup time• Compost mates: collect food waste from local cafes and compost it in home or community spaces
14. Coffee grounds
15. Shredded office paper
16. Bags of animal manure
17. Straw from the chickens’ straw yard
18. Grass clippings from neighbours
19. Leaves from the side of the road
21. Comfrey leaves
22. Why comfrey is your best friend• Comfrey is a dynamic accumulator - it sends down a series of deep taproots and extracts and accumulates large quantities of potassium (around 7%) and phosphorous (around 1%), calcium (around 3%), magnesium and other trace elements from the depths.
23. • These nutrients are stored in the leaves, which can then be used to feed other plants.• Comfrey is in effect mining nutrients out of the soil, because of the deep taproots which reach deeper than normal roots can go
24. Nearly finished layering
25. Compost worms
26. Compost nearly ready to use
27. Make it easy• make do with whatever you have around• optimal shape for a compost heap is approximately 1m wide and 1m high and at least 1m long• Build the heap in thin layers of different materials approximately 5cm thick and water each layer before progressing to the next.
28. • When the heap finally starts to cool down (around 2 – 4 weeks) worms will come in• Finished compost should be dark, fine and spongy with a pleasant earthy smell. You should not be able to recognise any of the original ingredients in it
29. 2 main possible problems• It stinks: turn and add brown material – carbon e.g. shredded newspaper• Nothing’s happening: turn and water well. Maybe add some manure or grass clippings, blood and bone or comfrey.The more effort you put in, the quicker you will get compost
30. How to useLike any other compost• Compost tea• As a mulch• Dug into top layer of soil
31. Handmade wheelbarrow compost sifter
32. Other types of hot compostingBiodynamic• The heap should be built as a windrow. The dimensions of the heap should be 2m wide at the base and 1.5m high and as long as is practical.
33. Jean Pain:• compost mound of wood chips made of tree limbs andpulverizedunderbrush.• Produces home &water heating aswell as methane touse as fuel.
34. Resources• Deep Green Permaculture• Permaculture Research Institute article• Biodynamic composting• Ground to ground• Compost mates• Compost sifter