Much like it often happens in the fall, it seems like we went from comfortable-with-a-sweatshirt weather to need-all-the-layers weather overnight. And to top it all off, we have a layer of snow on the ground. Oh, November, you’re full of surprises.
With the change in weather, you might be thinking that it’s time to put the compost pile to rest. However, with a cold weather adjustment or two you can continue to build that pile all winter long. First, let’s look at what might be happening in that pile.
Small Winter Compost Piles (less than 1 cubic meter)
If you have just a small pile, the soil making microbes might take a break during the cold weather. But the cold weather will also freeze – or at least preserve – the pile and anything you add to it, helping to keep the pile from developing an odor. When the pile thaws out in the spring be sure to add a good amount of “brown” carbon-rich materials to prevent odors while the microbes move back in. Since you’ve been feeding the pile all winter, those soil friendly microbes and earthworms will quickly move back in to your pile since it will be providing a bountiful feast for the little guys.
Larger Winter Compost Piles (greater than 1 cubic meter)
One of the great things about larger compost piles is that they generate enough heat in the center of the pile to keep those microbes alive and working. This means that you can feed and even turn the pile throughout the winter, and come spring you will be a bit further ahead in having some finished compost to add to your garden beds.
Winterizing your compost pile
Since the winter tends to be a leaner season for all those backyard and neighborhood critters, they tend to be on the lookout for any easy sources of food. If you don’t want your backyard to become the compost pile buffet, you may have to get creative with locking up your pile. Our current pile is contained in a bin with a twist-locking lid. The bin has ventilation built in, but the locking lid keeps birds, squirrels, coons, and neighborhood cats out. If you have an pallet bin, you may want to make a screen lid for it that can either be locked down or weighted down. If you have a loose pile, consider covering the pile with a tarp for the winter – just give yourself a point of easy access before the snow comes down if you want to keep feeding the pile during the winter.