Sweetgum (Liquidambar styraciflua) is an often-overlooked yet valuable firewood source. In this article, we’ll explore the technical details of using sweetgum for firewood, offering insights that are both practical and accessible to both experienced users and beginners.
Identifying Sweetgum
Sweetgum trees are recognizable by their distinctive star-shaped leaves and spiky, round fruits. Their bark is deeply furrowed and often tinged with red, giving them a unique appearance. The wood itself is moderately dense and has a pinkish to reddish hue.
Sweetgum Firewood Characteristics
BTU Content
- Sweetgum firewood has a respectable heat output, with a heat value of approximately 20 million BTUs per cord.
- This puts it on par with popular firewood choices like oak and hickory.
Seasoning Requirements
- Sweetgum has a high moisture content when freshly cut, so it benefits greatly from proper seasoning.
- To ensure efficient burning, it’s recommended to season sweetgum for at least 6-12 months. You’ll know it’s ready when the wood’s moisture content drops to around 20%.
Splitting and Storing Sweetgum
Splitting
- Sweetgum wood can be somewhat challenging to split due to its interlocking grain and stringy texture.
- Using a maul or hydraulic splitter is advisable for efficiency.
Storing
- Store sweetgum firewood off the ground, ideally on a rack to promote air circulation and prevent moisture absorption.
- Cover the firewood with a tarp or store it in a dry, well-ventilated area to maintain its seasoning.
Combustion Characteristics
Soot Production
- Sweetgum tends to produce more soot and creosote than some other hardwoods.
- Regular chimney cleaning is essential to prevent creosote buildup and reduce the risk of chimney fires.
Burning Qualities
- Sweetgum ignites easily, making it a good choice for kindling or mixed into your firewood stack for an easier start.
- While it can produce a high flame, it may not burn as long as denser hardwoods like oak.
Cautions and Considerations
Spiky Balls
- Sweetgum trees produce spiky seed pods that can be a nuisance when harvesting the wood. Wear gloves to protect your hands.
Mixture with Other Woods
- Sweetgum can be effectively mixed with other hardwoods to balance its burning characteristics and minimize creosote buildup.
Conclusion
Sweetgum firewood, when properly managed, can be a valuable addition to your wood-burning endeavors. While it may require some extra effort in splitting and seasoning, its respectable heat output and easy ignition make it a viable choice for your stove. Remember to practice good storage habits and chimney maintenance to maximize your sweetgum’s potential as an excellent firewood source. Whether you’re a seasoned wood burner or new to the world of firewood, sweetgum can be a practical and efficient choice for your heating needs.