How does eucalyptus compare to cedar in resisting fungal decay outdoors?

When choosing wood for outdoor projects, resistance to fungal decay is a critical factor. Eucalyptus and cedar are both popular choices, but how do they compare in this regard?

Cedar is well-known for its natural resistance to fungal decay due to its high concentration of natural oils and extractives like thujaplicins. These compounds act as fungicides, making cedar highly durable in outdoor environments without chemical treatment.

Eucalyptus, on the other hand, also exhibits strong fungal resistance, particularly species like Eucalyptus globulus. Its dense grain and natural oils provide protection, though its performance can vary by species. Some eucalyptus varieties may require treatment for prolonged outdoor use.

In direct comparison, cedar generally outperforms eucalyptus in long-term fungal decay resistance, especially in moist climates. However, eucalyptus can be a cost-effective alternative with proper maintenance. For optimal results, consider the specific application and environmental conditions when choosing between these two woods.

Both woods offer sustainability benefits, but cedar's proven track record in outdoor durability often makes it the preferred choice for high-moisture applications like decking and fencing.