Everything You Have Always Wanted to Know About Home Composting

Transcript

1 New York State Department of Environmental Conservation EVERYTHING YOU HAVE ALWAYS WANTED TO KNOW ABOUT HOME COMPOSTING... But Were Afraid to Ask! printed on 100% post consumer recycled paper

2 Recycling makes a difference in our environment, in the wise use of our natural resources and in the economic well-being of our state. It’s everyone’s responsibility to do their part and recycling is easy. Don’t forget to ask about recycled products when you shop. Every small effort combines with others to make a big difference. What Is ompost? Compost is a dark, crumbly, earthy-smelling mixture that consists mostly of decayed organic matter. Composting is a simple way to recycle nutrients and return them to the soil to be used again. By composting your yard trimmings and food scraps, you can help lighten the load of waste that would Compost is often mixed into the soil to make it richer for growing plants. It otherwise go to a landfill. can also be used as a mulch around plants and trees. What Can I Compost? • Yard trimmings, such as fallen leaves, grass clip pings, small branches, weeds and the remains of garden plants. Kitchen scraps EXCEPT FOR meat, fish, bones and fatty foods (such as cheese, salad dressing • and leftover cooking oil). Egg shells are fine to add. • Large woody branches that are cut, chipped or shredded into pieces can be added to a compost material can be chipped into smaller pieces and system to create air spaces in the pile. Woody used as a mulch or for paths, where they will eventually decompose. How Do I Start Composting? em in your pile or bin. You can then add yard Begin by collecting yard trimmings and throwing th trimmings and food scraps anytime but it is best to bu ry the food scraps in your pile. Chopping or mowing your materials makes the process go faster. Food scraps should be added to the center of the waste layers where heat will be the greatest. This also reduces unwanted critters coming to your compost pile. Pile material loosely in the bin. Too much compaction inhibits the flow of air through the pile. Wood chips or course weeds will create air pockets which help provide oxygen to the microorganisms. Water is key to successful composting . A compost pile should be kept damp - but not soggy - especially during dry spells. Be patient! It will take six months to a year before the compost is ready for use. 1

3 How Do I Build A Compost Pile? It’s easy! Follow these simple steps, and in just a few hours, you’ll be in business. - This is the cheapest and easiest way to compost. Yard Compost Mound trimmings can be composted without a bin if you do not mind the appearance of an uncontained compost mound in your yard. What To Do - Find a good location and loosen the soil where your pile will be. Pile your yard trimmings in feet in area. Alternate wet (green) and dry (brown) a mound about 3 feet high and at least 3 feet by 3 materials and add materials as they become available. If you mix your compost pile with a pitchfork or other tool, it speeds up the process. This is called ‘turning’. - All you need is a pitchfork or shovel and work gloves. What You Need Compost Can - Another cheap and easy way to compost small amounts of yard and food waste. What to Do ound your garbage can. You also need - Drill holes 4 to 6 inches apart all ar to drill holes into the bottom. (This allows for air movement and for excess water to drain off.) It is best to put 2 to 3 inches of straw or wood chips in the bottom to help it drain. Since a limited amount of air gets in, this system tends to work slower and the compost is wetter. Turn the compost with a shovel or pitch fork. Keep the garbage can cover on, it helps keep out the critters. - A garbage can with cover, straw or wood chips and a drill for making the holes. What You Need Compost Bins Can be made out of many types of materials - blocks or bricks, snow fence, used pallets, - wire mesh, etc. Blocks or Bricks - Just lay out the blocks or bricks without mortar. Leave spaces between the blocks or bricks to permit air to circulate. feet on a side and 3 to 4 feet high. The best size is approximately 5 to 8 Snow Fence - Used snow fence is a simple way to build a bin. Just drive four corner posts into the ground and attach the snow fence. Used Pallets - Find four clean pallets and fasten the corners together, and start filling. You may want to keep one corner loose, so the bin can be opened for turning and removing compost. Small-Mesh Wire Fencing - Buy or find wire mesh, form into a circle or square and add your compost materials. 2

4 Bins do not have to be square, they can be rectangu lar or cylindrical, it’s your choice. Remember, for a height and 5 to 8 feet per side will do. typical home garden, a bin 3 to 4 feet in Store Bought Bins - There are a variety of commercial bins that can be bought at your local hardware or garden store or you can find bins online. Compost Tumblers (Rotating Drums) Compost tumblers also called rotating drums are increasing in popularity. Rather than turning the materials with a pitchfork, which can be labor intensive, users simply push the unit or turn a crank once or twice a day. Each rotation introduces more air into the system, and mixes the materials together. This helps speed the composting process. To harvest the finish compost, stop adding materials to the tumbler and keep rotating it daily until the compost is ready. To compost newly generated materials while you wait, either get another tumbler or create a pile or stationary bin to contain the materials until your compost is ready. sulated and have difficulty retaining high enough One challenge with tumblers is that most are not in temperatures throughout the winter to keep the composting process going. If you can keep a large sized tumbler mostly full throughout the winter it will like ly retain enough heat. You can build your own system or buy one. There are many varieties sold online. How Does Composting Work? Many organisms are involved in the composting proc ess. They include bacteria, fungi, protozoans and centipedes, millipedes, beetles, ants and the most famous - earthworms! Composting is an aerobic process (requires oxygen), since these organisms use oxygen as they break down the materials and turn them into compost. In addition to oxygen, compost organisms need water to thrive. That is why the compost pile must be kept moist. If there is too much water not enough air can get to the microorganisms. Use the squeeze isture. Grab a handful of material and squeeze. If a test to find out if you have the right amount of mo few drops come out, you’re doing great. Compostable materials contain carbon and nitrogen. We refer to them as greens and browns. Greens are fruit and vegetable wastes, coffee grounds, grass clippings, manure. Browns are leaves, straw, wood chips, sawdust and shredded paper. The microorganisms use the carbon in leaves and other browns as an energy source. As the microbes breakdown this mate rial, heat energy is released. Nitrogen helps the microbes build proteins to grow and multiply. The decomposing organisms need a certain amount of both carbon and nitrogen to work well. Approximately 1 part greens to 2 part browns is a good mix. HINT: ALWAYS HAVE A STOCKPILE OF BR OWNS NEAR YOUR COMPOST SYSTEM, SO YOU HAVE BROWNS AT HAND TO ADD ON TOP OF YOUR GREENS. 3

5 Chopping or mowing your compost materials speeds the process since it provides more surface area for e materials into compost, the height of the pile the compost organisms. As the creatures decompose th will reduce by over 50%! For optimum composting, the compost temperature should be around 90 to 140 degrees Fahrenheit. The pile will be hot soon after adding materials and then will cool down. Here in New York State, unless you have a big pile that keeps in the heat, composting wi ll shut down for the winter as the microorganisms become inactive. This is not a problem, because the composting process will start up again when the weather gets warmer. However, if you want to add food scraps to your compost pile through the winter, you can insulate the pile. Insulating Your Compost Pile or Bin The easiest way to insulate a compost pile is to build a large pile as the cold weather approaches. A pile normally retain temperatures above freezing in the at least 3 feet high and 5 feet on each side will vered with about 1 foot of leaves. When adding food center of the pile. The top of the pile should be co d your food scraps and cover it back up. scraps, scrape away the top layer of leaves, ad it by putting leaves, straw or other lightweight If you have a bin instead of a pile, you can insulate nd the bin will provide good insulation during the browns around the bin. A layer one foot thick arou winter. Lightweight browns can be fenced in to keep them in place. Sturdier browns such as straw bales can simply be piled around the bin. When the warm weather arrives, these insulating materials can be added to your browns stockpile to be used after adding greens to the bin. Why Should I Make Compost? • Composting is an easy, practical way to recycle your organic yard and kitchen waste. Compost is an excellent soil conditioner for even the smallest yard and garden - it’s safe to use • and it costs practically nothing to make. • Compost grows healthy plants and healthy plants improve the air by removing carbon dioxide and making fresh oxygen. • For serious gardeners, compost is an inexpensive alternative to peat and other soil enhancements. Uses for Compost Gardens and Lawns – Mix it into the garden soil or sprinkle it on the lawn to improve moisture retention and soil texture and add beneficial microo rganisms and nutrients. Prior to adding it to the lawn it is best to finely screen the compost. Landscaping – Use it around garden beds, trees or shrubs as a mulch. House Plants - Use 1/2 to 1/3 of your container volume instead of soil. 4

6 Composting Do’s And Don’ts DO mix grass clippings with other wastes to loosen them up. They have a tendency to compact. The best way to manage grass clippings is to mulch them into the lawn. DO keep the compost pile damp, especially during dry spells. Squeeze test. DON’T use unfinished compost. It will rob your plants of nitrogen. add dog and cat droppings. They can contain diseased organisms that may not be destroyed DON’T through the compost. DON’T compost weeds that are heavily laden with seeds. Some seeds will not be killed during the heating process. DON’T add diseased vegetable plants to the pile if the compost will be used on a vegetable garden. The disease organisms may reappear the following year. DON’T add meat, fish, bones or fatty food scraps to the compost mixture. They will attract animals (dogs, cats, rats, etc.) and they do not decompose readily. Composting Summary Composting is simple and easy! Now that you read th is booklet, you can be a composting expert! Just remember your compost pile needs: • Microorganisms, including bacteria and fungi. • A good C:N Ratio (greens and browns). • A large enough pile to keep itself warm if you want compost in six months. • Enough moisture (but not too wet). • Air. • Time. Put it all together and the microorganisms and other organisms will do the rest! Yard Waste Management Besides Composting - Yard waste can be used for weed control and water retention. Use branches, leaves and grass. Mulching Just spread the materials around your plants . Branches may need to be chipped first. Leave It On The Lawn – Even better than composting grass cl ippings and leaves, mulch/mow them into the lawn. For more information on this, see our “Leave It On The Lawn” pamphlet. 5

7 Composting Indoors with a Worm Bin If you don’t have the ability to compost outside, you can still compost inside with a worm bin. Using a worm bin ha s several advantages. The composting material does not need to be turned; th e worms do it for you. The bin is often located inside so you don’t have to take a trip to the compost pile. The resulting compost is rich in plant micronutrients and helpful bacteria. What Kind of Worms Should I Get? The most common type of worm in a worm bin is the red wriggler (Eisenea fetida), also called the manure worm. The ideal number of worms in your bin depends upon the amount of ‘worm food’ you put in. The 2:1 ideal worm: vegetative waste ratio is . For example, if you generate 1/2 lb of vegetative waste per day, use 1 lb of worms. (There are approximately 1000 worms in a pound!) What Kind of Bin Should I Use? Worm bins are typically made of wood or plastic and come in all different sizes. The size of the bin depends upon the amount of ‘worm food’ you produce. Add one square foot of bin surface area for each pound of vegetative waste produced in a week. Make sure that there are some holes in the bin to allow air flow. Don’t forget holes for the bottom to let the liquid drain out. The worms like temperatures between 50 and 80 degrees Fahrenheit. Therefore, it is best to keep your worm box inside during the winter months. What Do Worms Eat? Worms eat decaying fruit, vegetables and bacteria. Bacteria, fungi and other organisms in the bin also contribute to the degradation process. While milk and meat products do degrade, they can produce odors and attract pests. Therefore, they should be avoided in a worm bin. Collect food waste in a covered container. Add food to one third of the bin every 5-7 days. Add the food to a different row each time. Start off slow handfuls each time. ly, adding just a few What Else Should I Add to the Bin? Besides food, worms need bedding. The bedding sh ould be high in carbon and moist (about 60% moisture). Shredded newspaper, offi ce paper, cardboard, or partially degraded leaves work well. Wet the bedding with water. Grab a hand ful and squeeze. If a few drops co me out, the amount of water is about right (approximately 60% moisture). Fi ll 3/4 of the bin with moist bedding. Sprinkle in a handful of soil or eggshells. This prov ides grit to aid the worms’ digestion. A handful of finished compost or soil can speed the degradat ion process by adding helpful microorganisms. 6

8 Harvesting Compost from Your Worm Bin After approximately 4-6 months the compost is ready to be collected. To allow the material in the bin to further degrade, don’t add food to the bin for one month. One method of harvesting the compost is to move it to one side of the bin. Then add new moist bedding and food waste to the empty side. Most of the worms will move to the new food in a few days - then simply removed the compost. Trouble Shooting Your Worm Bin Odors If the bin is too wet, the degradation process may become anaerobic which leads to odors. To prevent this, add dry bedding if more than a few drops of water can be squeezed from the bedding. Fruit Flies n. They are attracted to yeast and rotting fruit. Fruit flies are the most common pest in a worm bi t minimized, by burying the food waste 2 inches below the bedding. Flies can be avoided, or at leas Another way to avoid fruit flies is to use a bin with small air holes that flies can’t get through. Once the flies are present, stop putting food in the bin for approximately three weeks. The without adding food to the bin, but fruit flies cannot. worms can survive over a month For More Information on Yardwaste or Worm Bin Composting... If you want to know more about composting and ways to make good compost, consult books or gardening magazines, call your county Cooperative Extension of fice or visit Cornell Waste Management Institute’s http://cwmi.css.cornell.edu/smallscale.htm comprehensive website at . Call or write to: NYS Department of Environmental Conservation Division of Materials Management Bureau of Waste Reduction & Recycling 625 Broadway Albany, NY 12233-7253 (518) 402-8706 or email us at: [email protected] and check out our web page at: www.dec.ny.gov/ch emical/8801.html 7

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