Can You Compost Corn Cobs?

Can you compost corn cobs? The answer depends on the size of your compost bin. In a closed bin, you'll need to shred corn cobs to create smaller air pockets.

If you're composting the cobs separately, you'll need to add them to a pile with other materials that decompose more quickly. Here are some tips for composting corn cobs.

Composting Corn Cobs

Cut corn cob stalks up to create smaller air pockets

If you're looking for a way to speed up your compost pile, one way to get the most out of your discarded corn cobs is to cut them up into 1-inch. This will ensure that your compost pile is more aesthetically pleasing while also ensuring that it decomposes more quickly. 

In addition, corn cobs internal fibers will add structure and oxygen to your pile, making it better for the worms. Another tip is to cut up the corn cob stalks so that they do not take up a large chunk of the compost heap. 

The smaller air pockets will help speed up the decomposition process. However, cutting them up isn't necessary for larger bins. Depending on the size of your compost pile, a corn cob will take up to a year to completely decompose.

Composting Corn Cobs

Shred corn cob stalks in closed compost bins

If you've ever thought of turning your kitchen scraps into compost, you may be surprised to learn that it's quite easy to do. Composting is a natural process that makes your kitchen waste into valuable, soil-rich material.

This process is cheap and easy to do, and there are many different kinds of material you can compost. You can also add corn cobs to your compost bin.

Whole corn cobs create an air pocket in the pile, which speeds up the decomposition process.

Composting Corn Cobs

Determine composting pace by size of corn cobs

If you're wondering how to speed up your compost pile, you can use corncobs as a starting point. This brown, food waste should be blended with green materials, as they decompose faster than corncobs when left whole.

Besides being a great source of carbon, corncobs are also useful for animal bedding. In addition to being a great source of carbon, corncobs also add a lot of aeration to the pile.

The best composting process for corn cobs involves a lot of turning. It's recommended that you turn the compost pile frequently to keep the compost moist and warm.

Adding a cup of 10-10-10 fertilizer to the pile at regular intervals is essential for improving its quality and speed. If you want your compost to be as rich as possible, rotate the pile every two to three weeks, and be sure to add fresh materials every time you turn it.

Composting Corn Cobs

Time it takes for corn cobs to decompose

Adding corn cobs to your compost pile can speed up the composting process. In a few months, a compost pile with a high heat level will decompose corn cobs.

It is important to keep the heat, moisture levels, and aeration of your pile at an optimal level. Cutting the cobs into smaller pieces will speed up the process, but grinding them beforehand is preferable. Dried corn cobs can take six months to a year to decompose.

Whether corn cobs compost naturally or in a compost bin, the time it takes for them to decompose depends on their nitrogen and carbon content. Corn cobs have a C:N ratio of about 80:1, which means they decompose slower than green materials. 

While corn cobs may be able to decompose within a year or two when left in a compost pile, they take longer to break down in soil than grilled or boiled corn. Once decomposed, corn husks can be used as much or composted as well.

Composting Corn Cobs


Yes you can compost a corn cob since it is biodegradable, although it takes longer to decompose. It is best to cut them up into about 1-inch chunks.

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