What Are The Differences Between Softwoods & Hardwoods?

In the greater Auckland region, the most commonly burned firewoods are Pine, Macrocarpa, Gum and Ti-tree.

Pine (Pinus radiata) and Macrocarpa (Cupressus macrocarpa) are both conifers, and are described as softwoods. Gum (Eucalyptus sp.) and Ti-tree (Leptospermum scoparium), also known as Manuka and Tea Tree, are both broadleaf trees, and are described as hardwoods.

Softwoods are fast-growing trees, with comparatively large gaps between their annual increment rings. Hardwoods grow much slower, and their annual rings are very closely spaced.

In most cases, the more closely spaced a tree's annual rings, the heavier the wood and greater its bulk density. This gives most hardwoods slow-burning or long-burning properties, making them far superior for use as firewood than the softwoods.

Firewood should have a moisture content of no greater than 25%. Firewood with a moisture content of less than 20% is preferable in producing more efficient, clean-burning heat.

The Good Wood Scheme, recently adopted by Nelson City and Tasman District Councils, makes it illegal for residents to sell or burn firewood with a moisture content of more than 25% during winter months.

We support the introduction of firewood initiatives similar to the Good Wood Scheme by local councils throughout New Zealand.