Butternut Firewood
Juglans cinerea·hardwood·fair overall rating
Butternut Firewood at a Glance
Burn Characteristics
BTU / Cord
million BTU
Dry Weight
2,125
lbs/cord
Seasoning
6–12
months
Split Difficulty
Easy
Smoke Level
Medium
Spark Tendency
Few
Coal Quality
Overall Rating
Is Butternut a Good Firewood?
Butternut, sometimes called White Walnut, is one of those species that most people wouldn't think twice about tossing into the firewood pile. And honestly, it's not bad for what it is. It's just not a powerhouse.
At 13.2 million BTU per cord, you're in the lower tier of hardwoods. That puts butternut well below red oak or hickory, and roughly on par with some softwoods. It's technically a hardwood, but at only 2,125 lbs dry per cord, it's one of the lightest in that category. You can compare it alongside everything else on the firewood BTU chart to see where it lands.
Splitting butternut is a breeze. The grain is straight, the wood is soft, and your maul goes right through it without much fuss. It does produce a moderate amount of smoke, so keep that in mind for indoor use, good draft and a clean chimney help.
Seasoning takes 6 to 12 months, which is pretty standard. Get it split and stacked in spring, and you'll have dry wood by fall. Nothing tricky here.
Bottom line, butternut works as a shoulder-season wood or a fire starter, but don't plan on heating your house with it alone. It burns quick, the coals are poor, and you'll be reloading constantly. Mix it in with something denser like Black Walnut firewood, its close cousin, and you'll get much better results. The fragrance is pleasant, though, nice for a casual evening fire in the pit.
Species Information
- Scientific Name
- Juglans cinerea
- Also Known As
- White Walnut
- Type
- hardwood
- Regions
- Northeast, Midwest
- Availability
- Limited
- Fragrance
- Good
How many cords of Butternut do you need?
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Try it freeHow Long Does Butternut Take to Season?
Butternut firewood takes 6–12 months to season properly. That puts it in the moderate range — split it in early spring and it should be ready for the following heating season. Always split before stacking, since rounds dry far more slowly than split pieces with exposed end grain.
For fastest results, split Butternut into pieces no larger than 6 inches across and stack in a single row where wind and sun can hit both sides. Avoid stacking against buildings or fences that block airflow. A south-facing location will shave weeks off the drying time.
For detailed drying timelines for all 70 species, see our firewood seasoning guide. And if you want to understand why seasoning matters so much, our green vs seasoned firewood page breaks down exactly what happens when you burn wet wood.
Can You Burn Butternut in a Fireplace?
Yes, Butternut can be burned in a fireplace. It produces moderate sparks, so a spark screen or glass doors are recommended for safety. With a screen in place, it burns nicely and provides good heat. In a fireplace insert with sealed glass, the spark concern is eliminated entirely and Butternut performs well.
For the best fireplace experience with Butternut, make sure it’s fully seasoned below 20% moisture. Wet wood of any species will smoke heavily and dirty your fireplace glass. Use a moisture meter to check a freshly split face before burning. For longer-lasting fires, mix Butternut with a denser species that holds coals better, like oak or hickory.
Wondering which species are the best fireplace choices overall? Check our best firewood rankings, or compare Butternut against all 70 species on the BTU chart.
Frequently Asked Questions
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