Composting

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Composting at home can get a bad rap. Common misconceptions of home composting are that it’s too complicated, it’ll smell bad, and it’s messy. These may be true if you compost the wrong way, but learning how to compost the right way is actually quite simple. Start with a layer of organic materials, add a dash of soil and a splash of water, and wait for your concoction to turn into humus (the best soil booster around!). You can then improve your flower garden with compost, top dress your lawn, feed your growing veggies, and more. Once you get your compost pile started, you’ll find that it’s an easy way to repurpose kitchen scraps and other organic materials into something that can help your plants thrive.

Types of Composting

Before you start, it’s important to know that there are several types of composting. Here we’re covering cold compost, hot compost, and vermicompost. Cold composting is as simple as collecting yard waste or taking out the organic materials in your trash (such as fruit and vegetable peels, coffee grounds and filters, and eggshells) and then corralling them in a pile or bin. Over the course of a year or so, the material will decompose.

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Hot composting requires you to take a more active role, but the return is that it’s a faster process; you’ll get compost in one to three months during warm weather. Four ingredients are required for fast-cooking hot compost: nitrogen, carbon, air, and water. Together, these items feed microorganisms, which speed up the process of decay. In spring or fall when garden waste is plentiful, you can mix one big batch of compost and then start a second one while the first one “cooks.”

Another type of compost is vermicompost, which is made with the help of worms. When these worms eat your food scraps, they release castings, which are rich in nitrogen. You can’t use just any old worms for this. You need redworms (also called “red wigglers”). Worms for composting can be purchased inexpensively online or at a garden supplier.

What to Compost

Composting at home is a great way to use the things in your refrigerator that are a little past their prime, which helps reduce food waste. You can also compost certain kinds of yard waste rather than send them to the dump. Collect these materials to start off your compost pile right:

• Fruit scraps
• Vegetable scraps
• Coffee grounds
• Eggshells (though they can take a while to break down)
• Grass and plant clippings
• Dry leaves
• Finely chopped wood and bark chips
• Shredded newspaper
• Straw
• Sawdust from untreated wood

Keeping a container in your kitchen, like this white ceramic compost bucket ($25, World Market), is an easy way to accumulate composting materials as you prep meals. If you don’t want to buy one, you can make your own indoor or outdoor compost bin. For kitchen scraps that could start spoiling quickly, another option is to store them in the freezer until you are ready to add them to your larger outdoor pile.

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How to Make Hot Compost

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Combine Green and Brown Materials

To make your own hot-compost heap, wait until you have enough materials to make a pile at least 3 feet deep. You are going to want to combine your wet (green) items with your dry (brown) items. Brown materials include dried plant materials, fallen leaves, shredded tree branches, cardboard, newspaper, hay, straw, and wood shavings. These items add carbon. Green materials include kitchen scraps, coffee grounds, animal manures (not from dogs or cats), and fresh plant and grass trimmings. These items add nitrogen. For best results, start building your compost pile by mixing three parts brown materials with one part green material. If your compost pile looks too wet and smells, add more brown items or aerate more often. If you see it looks extremely brown and dry, add green items and water to make it slightly moist.

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Water Your Compost Pile

Sprinkle water over the compost pile regularly so it has the consistency of a damp sponge. Don’t add too much water or the microorganisms in your compost pile will become waterlogged and drown. If this happens, your pile will rot instead of compost. You can monitor the temperature of your compost pile with a compost thermometer ($19, The Home Depot) to be sure the materials are properly decomposing. Or, simply reach into the middle of the compost pile with your hand. Your compost pile should feel warm.

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Stir Your Compost Pile

During the growing season, you should provide the compost pile with oxygen by turning it once a week with a garden fork ($40, The Home Depot). The best time to turn the compost is when the center of the pile feels warm or when a thermometer reads between 130 degrees F and 150 degrees F. Stirring the compost pile will help it cook faster and prevents materials from becoming matted down and developing an odor. At this point, the brown and green layers have served their purpose so it’s ok to stir thoroughly and intermix the two materials.

Test Garden Tip: In addition to aerating regularly, chop and shred raw ingredients into smaller sizes to speed up the composting process.

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Feed Your Garden with Compost

When the compost pile no longer gives off heat and becomes dry, brown, and crumbly, it’s fully cooked and ready to feed to the garden. Add about 4 to 6 inches of compost to your flower beds and a thick layer to the top of pots at the beginning of each planting season.

Some gardeners make what’s known as compost tea with finished compost. This involves allowing fully formed compost to “steep” in water for several days, then straining it to use as a homemade liquid fertilizer.