Simple, DIY and compatible with most spaces. I recommend these methods as part of maintaining a healthy, organic garden. I once used an old, wooden chair and plywood to create a compost bin. Some municipalities offer educational talks on composting and even provide attendees with free, specialized composting bins. Pre-made bins make dumping and collecting composted soil easy. If you turn the compost pile frequently (every couple of weeks) it will decompose faster and be ready for the garden in about three months. Stop turning the pile in winter to retain heat.

• Composting - The process of recycling organic waste back into the soil. This can be vegetable rinds, fruit cores or peels, egg shells, or coffee grounds brewed in bio-degradable filters. Nature breaks down this composition and turns it into nutrient-rich soil. Organically composted dirt feeds plants slower and for much longer. Using compost helps break up clay and other hard-pack dirt. Composting is the simplest and easiest way to fertilize your garden and recycle your food waste.
• Mulching - Especially good for trees and shrubs, mulch acts as a barrier against competitors for young plants and eventually decomposes into rich, healthy soil. Also a great way to process the green leavings from precious plants that have passed. Speaking of which...
• Lawn and Yard Leavings - Most everything your property produces can be composted back into the soil. Cut grass need not be bagged and removed; some of it can go in the compost bin and the rest can be left as is to aid the growing grass. Dead leaves, last year's kale stalks and other garden husks can all be composted. Composting generally kills most plant diseases in the process. Severely-afflicted plants should be removed from the property. Wood and branches over an inch in diameter should be chipped before composting or mulching.
• Bugs In the Bin - Leave them. They help. Unless they have three heads. That's a hydra. Avoid at all costs.

* Leave leftovers from last year's garden in the garden. Last year's plants become this year's dirt! Turn it over and dig in.