| When starting compost or deciding on your | | | | Compost tumblers are popular because they are |
| compost bin design, the most important point to | | | | clean and simple and take the hard work out of |
| consider is how to keep the compost mix moist | | | | mixing the heap by hand. Tumblers are rotated |
| and warm so that it breaks down easily. If you | | | | frequently to allow air to flow through the mix |
| add just the right ingredients in the correct | | | | and excess moisture to drain away. When heat |
| proportions you'll have a sure-fire composting | | | | builds up in the middle of the mix, micro-organisms |
| method that will improve your soil or form the | | | | quickly break the material down into useable soil. |
| basis of your no dig garden. | | | | A recipe for success |
| First though, let's look at two popular types of | | | | Following this simple recipe for building your |
| compost bin designs; the simple three-bin system | | | | compost will ensure you have good, useable soil in |
| and the compost tumbler. | | | | abundance. |
| Three-bin compost system | | | | 1. Start with 4ins (10cm) of food scraps. (Don't |
| You need an oblong bin, usually constructed out of | | | | use meat unless you want to invite rats!) |
| scrap timber with space between the boards and | | | | 2. Add a 4ins (10cm) layer of grass clippings or |
| divided into three separate sections. The bin | | | | garden pruning material. |
| should have no floor and be sitting on the ground | | | | 3. Now add about 1ins (2cm) of dry chicken |
| to allow earthworms to do their job of aerating | | | | manure. |
| the mix and breaking it down more quickly. | | | | 4. Add another layer of grass clippings etc. as in |
| The system works by moving the compost | | | | step 2. |
| through different stages to completion. | | | | 5. If using lime to reduce the smell, now is the |
| Bin 1: This is where you start the process with | | | | time to add a light dusting to the mix. |
| fresh leaves and scraps. Bin 2: The compost is | | | | 6. Add food scraps again as in step 1. |
| moved to this bin when partially decomposed and | | | | 7. Add torn or shredded paper that has been |
| ready to receive additives such as lime. Bin 3: | | | | dampened first. This will absorb any excess |
| Transfer the completed compost to this bin when | | | | moisture in the heap. |
| it has turned into brown, crumbly soil and is ready | | | | 8. Now dust with fertilizer - blood and bone or |
| to use in your garden. | | | | wood ash. |
| Tip: If you're handy with wood frame | | | | This process may seem a little complicated at |
| construction, build moveable slats into the front | | | | first, but just like a good cook, you'll soon have |
| side of each bin. These can then be removed | | | | no need to consult the recipe. Once you get into |
| when the compost is ready to be transferred to | | | | the swing of it you will instinctively know what |
| the next stage. | | | | ingredients your compost needs and when to add |
| Compost tumblers | | | | them. |