How To Start A Compost Bin Or Pile In Your Backyard – Everything You Need To Know

Composting is great for your garden and easy to learn!

Woman pours bucket of garden scraps into compost bin
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When I was a child, I dreamed of having a magic wand and turning unwanted stuff into treasures. Now, as a mature gardener, I’ve found that magic wand, and it’s called my compost bin.

Laugh if you will, but starting a compost bin lets you turn kitchen scraps and garden detritus into organic compost. That may not achieve “treasure” status but then again…have you checked the price at a garden store lately?

If you’ve been thinking of starting a compost pile and scrolling the internet to figure out how to start composting, you’ve found what you are looking for. Read on for all the details you need on how to start a compost bin.

Woman scoops compost from a bin into a wheelbarrow

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Benefits of Composting

Most things have benefits and detriments. For example, having a car allows you to travel distances (benefit) but isn’t good for the environment (detriment.) But with composting, it’s all in the benefit column.

Composting works like this: you set aside a space in the garden for a compost pile or to place a compost bin. You put scraps from the kitchen – like carrot peels, coffee grounds, overripe fruit, and the slimy stuff from the inside of a pumpkin – and yard debris like dry leaves, into the compost pile or bin. You turn it, you water it, you leave it in the sun, and it transforms into a product that makes your garden grow like … well, like magic.

How does it work? The composting process heats up the pile of detritus and hastens the natural decay process. Organisms in the soil break down all the materials into a product that looks like dark, healthy soil. This can happen in a few months with the right compost mix, sun exposure, and water.

Blending this compost into your soil changes its consistency so that it holds moisture better and lets more air through, drains better, and provides more nutrients to plant roots, decreasing the need for fertilizer. You can also use organic compost as mulch, laying it on top of the soil to hold in moisture, protect plant roots from heat and cold, hold the topsoil in place, and stop weeds from taking over.

The downside to starting a compost in the backyard? Well, the garden store won’t earn quite the level of profits from you that they might have been hoping for.

Person cuts carrots and collects vegetable scraps in bowl on counter

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How to Start Composting

How to start a compost bin or pile? Ready, set? Let’s start!

Select Your Composting Style

This may be the only difficult decision you have to make when you are getting into home compost: deciding on your compost style. Compost areas can range from free compost piles, requiring only a cleared space in a sunny corner of the garden where you can pile your compost ingredients, to a fancy bin that you can rotate costing hundreds. Most of us draw the line somewhere between.

I personally built a wooden compost “pen” without a bottom or top in my San Francisco backyard. This is a step up from simply using a pile. In France, I have a large, plastic bin. It looks like a huge garbage can but has drain holes in the bottom. My neighbor has a fancy bin elevated on hinges so that it will rotate to blend the compost effortlessly.

Your compost style is up to you, the energy you want to expend, and your wallet. The compost you get at the end will be the same.

Choose a Location

The best place for a backyard compost area is somewhere you are going to use it, but slightly out of the main area since the composts can smell a bit. A garden location is useful since most of us use compost for our veggie or flower planting. Since you’ll need to add water in dry, hot periods, make sure the location is within reach of the hose, but don’t pick a spot with standing water.

I like to put compost in an area with dappled sun, but a shaded area is okay as well. If you have trees in your landscape, you may regret placing a compost pile too close, since tree roots will be attracted to the organic material, grow into the area, and make the compost pile unusable. You’ll want enough flat space for a compost pile to be at least 3 feet by 3 feet (1m by 1m) in order to function efficiently. You don't need much space; you can even compost on a balcony!

Plastic compost bin sits in garden

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Build Your Compost

There are two primary categories of material you use to build your compost, green material and brown material. While the colors are useful for describing the material, note that not all green material is green, nor is all brown material brown.

Green materials are those that are rich in nitrogen, while brown materials are those that are rich in carbon. This includes kitchen scraps from plants – veggies, fruits – eggshells, grass clippings and fresh yard clippings. Nothing from animals or fish permitted, which excludes dairy as well. Brown materials can be fallen leaves and twigs, coffee grounds, sawdust, and newspaper or cardboard.

Now build your compost like lasagna: a layer of brown, moistened with water, then a layer of green, followed by a sprinkle of water. The brown to green ratio should be about 2:1, but precision is overrated here. Some people add some garden soil between green and brown layers too.

Woman dumps rotten tomatoes on to compost pile

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Maintain Your Compost

Your compost pile never sleeps – it is busy decomposing the material all day and all night. You need to help it get its work done. While most of the water needed will come from rain, count on watering down the pile or bin once a week. You will also need to turn the compost – moving the materials from the bottom of the pile up to the top and bringing air into the mix. Schedule this every month.

Gardener examines handful of compost

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Frequently Asked Questions

What do I put at the bottom of my compost bin?

Generally, a brown layer goes on the bottom of the compost bin. But if you accidentally start with a green layer, it will all be the same anyway, given your schedule of turning the material.

What time of year should you start composting?

I started my composting in spring, but that’s just because it’s easier to get on with projects in spring as the weather turns toward summer. Any time of the year is a great time to get started.

Do I need enzymes to start a compost bin?

No, you don’t. Although some experts may recommend this, it really isn’t necessary. Composting is a natural process and Mother Nature will have everything she needs to get it underway.

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Teo Spengler
Writer

Teo Spengler has been gardening for 30 years. She is a docent at the San Francisco Botanical Garden. Her passion is trees, 250 of which she has planted on her land in France.