Cedar is generally harder than pine. This conclusion is based on the Janka hardness scale, which measures the resistance of wood to indentation. On the Janka scale, cedar typically ranges from 900 to 1,350, while pine ranges from 300 to 600. This significant difference in hardness makes cedar more suitable for applications requiring durability and strength, such as outdoor furniture and construction.

The reason cedar is harder than pine lies in their cellular structure. Cedar has a denser grain and a higher proportion of hardwood fibers compared to pine. This denser structure contributes to cedar's greater resistance to wear and tear. Additionally, cedar contains natural oils that provide it with excellent weather resistance and durability, further enhancing its hardness. Pine, on the other hand, has a softer grain and is more prone to splintering and warping, making it less suitable for heavy-duty applications.

Data from the Janka hardness test supports this analysis. For example, Western red cedar, a common type of cedar used in construction, has a Janka hardness rating of around 1,350, while southern yellow pine, a common type of pine, has a Janka hardness rating of around 600. This difference in hardness is reflected in the performance of the two woods in various applications. For instance, cedar is often used in outdoor decks and furniture due to its durability, while pine is more commonly used for interior projects where strength is not the primary concern.