Start Your Winter Firewood Now: A Plain Guide to Seasoning, Stacking, and Buying

If you heat any part of your home with a wood stove or fireplace, late September is the moment to pay attention. The wood you burn in December had to start drying months ago. Green, freshly cut wood does not heat well, it smokes, and it coats your chimney in creosote, which is exactly the buildup that starts chimney fires.

The good news is the principles are simple, and they apply whether you cut your own wood or buy it from a neighbor. Season it long enough, split it, and stack it so air can get at it, and the wood does the rest.

This guide is for someone heating a home for the first time, or someone who wants to stop burning wet wood. Nothing here assumes you already know a cord from a face cord.

Why seasoning matters so much

Freshly cut wood is mostly water. A green log can hold half its weight in water. When you burn it, a lot of the fire's heat goes first to boiling that water off and sending it up the chimney as steam. You get less heat in the room, a cooler fire, more smoke, and more creosote.

Seasoning just means letting the water leave the wood before you burn it. It happens on its own, slowly, as long as the wood is split, off the ground, and open to moving air.

The number to keep in mind is moisture content. Properly seasoned firewood should be around 20 percent moisture or less, and ideally under 20. A simple moisture meter, about the price of a nice dinner out, tells you in seconds. You push the two prongs into the end of a split piece and read the number. It is one of the more useful tools a wood burner owns.

Freshly cut oak can sit at 50 percent or more. Heated and ventilated, it takes real time to come down.

How long does seasoning take?

There is no shortcut around time. The dense hardwoods that make the best heat are exactly the ones that dry slowest.

• Softwoods like pine, spruce, and cedar dry faster, often usable in six to twelve months, if they are split and stacked well. They catch quickly and make good kindling and shoulder-season wood, but they burn fast and can throw more creosote.
• Most hardwoods need at least a full year of seasoning. Maple, ash, and birch are often ready in about a year when split and stacked well.
• The densest woods, oak and hickory, can take eighteen months to two years. Oak in particular is slow to dry even when split.

That timeline is the whole reason you start now. Wood you split and stack in fall can still be wet by the time you want it, if it is a dense species. Wood you started a year ago is what you burn happily this winter.

A smart habit is to run a year or two ahead. Whatever you burn this winter, have the wood for the winter after next already split and stacked. That cushion is what turns firewood from a scramble into a chore.

Split the wood before you stack it

Splitting is not just about fitting logs in the stove. It exposes the inner wood to air, which is what lets it dry. A whole, unsplit log dries only from the outside and can stay wet inside for a very long time.

Split pieces six inches or so across dry much faster than big rounds. The more surface area, the quicker the water leaves.

This is also where the work lives. Splitting a few cords by hand is real exercise, and a hydraulic splitter is a worthwhile neighborly thing to borrow or share. Whichever way you split, the goal is the same: open the wood up so air can move through it.

Stack so air can move

How you stack matters as much as how long you wait.

• Keep the stack off the ground. Set it on pallets, rails, or old boards so air can flow underneath and the bottom row is not soaking up ground moisture.
• Leave some airflow between the top and the stack itself rather than sealing it airtight, and between the ground and the first row.
• Put the stack in a sunny, breezy spot if you have one. Sun and wind are the two things that dry wood.
• Do not let the sides sit flush against a wall or fence with no gap. Air needs to move through the pile.
• Cover the top to keep rain and snow off, but leave the sides open. A tarp or sheet of metal over the top, weighted down, is enough. Do not wrap the whole pile; that traps the moisture that should be escaping.

Many people keep two stacks: one that is ready to burn, and one still seasoning. When you empty the dry one, the seasoning one moves up.

Buying wood: know what you are paying for

If you buy firewood, the terms matter, because the price can be quoted for very different amounts.

• A full cord is 128 cubic feet, usually a stack four feet tall, four feet wide, and eight feet long. That is the honest, standard measure.
• A face cord, sometimes called a rick, is only one row deep, typically four feet tall, eight feet long, and about sixteen inches deep. It is about a third of a full cord.

Ask plainly what you are getting, how it is measured, and whether it is seasoned already or still green. Better yet, ask to look at it. Seasoned wood is lighter, the bark is loose, and there are cracks in the ends.

Also ask where the wood came from. Moving firewood long distances can spread tree pests and diseases, so the best practice is to buy wood that was cut near you and use it within a reasonable time. Buying local also keeps money in the neighborhood, which fits how this whole place is meant to work.

Burn dry wood and keep your flue clean

The payoff for all this patience is a hotter, cleaner, safer fire. Dry wood lights easily, burns steadily, and leaves far less creosote in your chimney.

Creosote is worth taking seriously. It is a tar-like buildup that forms when smoke from damp wood cools inside the flue, and it is the leading cause of chimney fires. Burning dry wood keeps it down, but it does not remove the job of keeping the flue clean.

• Have your chimney cleaned and inspected every year, or after every cord, whichever comes first.
• Never burn wet or green wood as your main heat source.
• Do not burn trash, painted or treated wood, or any wood with glue, because those release fumes you do not want in your house.
• Let a fire burn hot and bright now and then, which helps burn off light creosote, rather than running it low and smoky constantly.

Start your cushion now

However late it feels, tonight is better than a month from now. Work backward from the heat you need and add time.

• Identify what you will burn this winter. If it is already seasoned, you are in fine shape.
• Start the wood for the winter after now, split and stacked where it can dry.
• If you heat part-time or only on the coldest nights, figure on roughly one to two cords for a modest part-time setup, and more if wood is your only heat. Your stove size and your house decide the real number, so it is worth asking a neighbor who heats with wood what they actually go through.

Firewood rewards people who think ahead. It is steady work, but it is honest work, and a stack of dry wood in October is one of the calmest feelings on a farm. When the snow piles up and the cold sets in, you are not scrambling. You are just opening the stove door.

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— C. Steward 🐑