Living Green 365: Composting

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Get the dirt on composting

It looks like summer is finally here. It’s time to enjoy the beautiful weather, spruce up the garden, eat delicious fruits and vegetables, and…get that compost pile started!

Of the 251 million tons of waste Americans generate every year, about 28% could be composted. But in 2012, only about 8% of the total waste generated was composted. Help increase the recovery of waste in the United States by starting your very own compost pile or using one of the curbside or drop sites described below. Besides reducing the amount of waste generated each year, composting offers numerous real benefits including:

  • Saving you money and reducing toxicity by decreasing the need for expensive chemical fertilizers and pesticides.
  • Improving your garden as it enriches soil by helping to keep moisture in, and pests and diseases out!
  • Lowering your carbon footprint as waste is diverted from landfills, therefore reducing methane emissions.

Composting isn’t difficult; anyone can do it! Getting your compost pile started, and keeping it going, just requires the right mix of ingredients and a little bit of time. The composting process can be decomposed into four simple steps, follow them and you’ll be on your way. And once you use some finished compost in your garden, you’ll know why gardeners call it “black gold”.

So here’s how to get your very own compost pile started:

Daryl Mitchell

It all begins with a bin!

The first step toward a successful compost pile is getting the bin where you will put your compost ingredients. When it comes to the bin, you have lots of options. You could build your own bin using these instructions from the MPCA or look online for other designs. There are also numerous compost bins you can purchase online or in your local gardening store. An ideal size is about one cubic yard (3’ x 3’ x 3’), as it is a manageable size for residents and will still retain heat. Be sure to check with your local municipality for any specific backyard compost rules on size.

Once you have the bin, all you need to do is find a spot outside for it, preferably a place with good drainage and easy access to water. If you plan to add materials during the winter, be sure it is somewhere you can access in the snow. (Don’t have a place outside to put a bin? Then check out these helpful instructions on how to compost inside!)

Compost Mix MPCA

The right mix does the trick.

In order to get the best results out of your compost pile, it is helpful to get the right blend and balance of ingredients. The key compost components are nitrogen-rich “greens” which give the microbes protein, carbon-rich “browns” which give the microbes energy, water, and air. Fulfill your “greens” quota with fresh grass clippings, green leaves, and vegetable and fruit scraps, while the “browns” in the compost pile can come from straw, brown leaves, twigs, and wood chips. To help provide air circulation and proper drainage, start your pile by placing a layer of coarse browns such as twigs in the bottom of your bin. 

When adding materials to your compost pile you want to have a carbon to nitrogen ratio of 30:1 (by weight), which translates to roughly two parts "green" to every one part “brown”. A part would be a particular volume like a five-gallon bucket, but your “recipe” will somewhat depend on the materials you are using. Don't worry about getting the mix exactly right, as it's very easy to add material to adjust the pile's performance. If your pile is not heating up enough to do much composting, you likely need more “greens”, whereas if your pile starts to have an odor, you likely need more browns.

Mark Turnauckas

Help your compost go with H2O.

The microbes that work to break down your compost pile require water to function. It’s important to keep your pile hydrated but not soaking wet. If you squeeze a clump of compost in your hand and small beads of water form, then your pile is adequately watered. If you do the squeeze test and lots of water drips out, then this is a sign that your pile is overwatered. Turn the pile several times to help air it out and refrain from adding additional water. You can also add dry leaves to help absorb extra moisture. Rainfall, together with the grass clippings, usually provides enough moisture for the pile.

Turning Compost

Turn the pile, every once in a while.

After you’ve created your compost pile, you can leave it up to the bacteria, fungi, and insects to start the decomposition process. Besides adding more materials and checking on the amount of water in the pile, you will need to turn the compost pile over every week or so. This helps aerate the pile and mix up all the different ingredients, which will  help all the decomposers continue to work hard to break everything down. Keep turning the pile until it’s complete. You will know it’s done when the finished compost is dark, rich, and crumbly, a far cry from what was originally in the pile!

Want to compost but are unable to start your own pile?

An increasing number of communities throughout Minnesota now have large-scale composting options that are made possible by source-separated collection. Source-separated collection means that residents and businesses separate the organics out from the rest of the waste. Commercial composting offers communities many benefits, because these facilities are able to accept a greater number of items including non-recyclable paper such as paper towels, and paper cups and plates. Additionally, large-scale composting helps restaurants, businesses, and commercial venues consolidate food waste at a compost facility so that these establishments don’t have to maintain their own compost pile. Large-scale composting is a great opportunity for residents and businesses to take real steps toward reducing waste!

Here is an abbreviated list of places that offer source-separated organics composting:

Drop-sites: Carver County (Environmental Center), Hennepin County (Brooklyn Park Drop-off Facility), Minneapolis (Pearl Park), Ramsey County (yard waste drop-sites)Western Lake Superior Sanitary District (Food waste and yard waste)

Curbside (some may depend on hauler): Cities of Bloomington, Chaska, Chanhassen, Eden Prairie, Edina, Elk River, Hutchinson, Loretto, Mankato, Maple Plain, Medicine Lake, Medina, Minnetonka, Orono, Shorewood, St. Bonifacius, St. Louis Park, Watertown, Wayzata and certain neighborhoods in Minneapolis

Compost facilities that allow drop off directly from residents: Rosemount (The Mulch Store), Shakopee (Shakopee Mdewakanton Sioux), St. Cloud (Full Circle)

So what are you waiting for? Now’s the time to start your compost pile. It’s great for your wallet, your garden, and the environment!


Community Events & Resources

Questions about your compost pile? Running into problems? Check out these great resources provided by the MPCA detailing how to start composting.  

Each spring the Recycling Association of Minnesota teams up with local businesses and governments throughout the state to provide local residents with inexpensive compost bins and rain barrels. Although the Spring sale event  has ended for this year, be sure to check back again next year to get a great deal on a new compost bin or rain barrel!  


Thank you for reading Living Green 365. This newsletter is a publication of the Minnesota Pollution Control Agency. Please send questions or comments about living green to the address below.

Sincerely,

Mark Riegel, guest author, and the Living Green Team   

livinggreen365.pca@state.mn.us