What is the term for trees suitable for the production of lumber?

The term for trees suitable for the production of lumber is saw timber. Saw timber refers to trees that are of a sufficient size and quality to be processed into lumber, which is used for construction and various wood products. These trees typically have straight trunks, a significant diameter, and minimal defects, making them ideal for cutting into boards and other lumber pieces.

In contrast, other types of wood have specific uses that do not pertain to lumber production. Pulpwood is primarily used in the production of paper and can come from smaller or lower-quality trees. Fuelwood is used for burning as fuel, rather than being processed into lumber products. Chipwood, often derived from smaller trees or wood byproducts, is generally used for mulch, chips, or particleboard, rather than as traditional lumber. Thus, saw timber specifically denotes those trees that meet the criteria for lumber production, making this choice the most appropriate in the context of the question.