4403.97.00 - Of poplar and aspen (Populus spp.)

This HTS category, 4403.97.00, specifically classifies wood in the rough that is of poplar and aspen species (genus *Populus*). This includes logs, rough-sawn timber, and other forms of timber that have not undergone significant processing beyond the removal of bark or sapwood, or basic squaring. The defining characteristic of this classification is the botanical origin of the wood, exclusively identifying *Populus* species.

Distinguishing this category from its siblings involves recognizing the precise botanical classification of the wood. For instance, while siblings like 4403.91.00 cover oak, and others such as 4403.93.01.00 and 4403.94.01.00 deal with beech based on dimensional criteria, this code isolates poplar and aspen. Similarly, other birch classifications are found at sibling levels, highlighting the importance of species identification for accurate tariff application.

The subcategories under 4403.97.00 further refine the classification based on the intended use or specific form of this poplar and aspen wood. These include subdivisions for pulpwood, which is specifically intended for papermaking, and for poles, piles, and posts, which are typically used in construction or infrastructure projects. The "Other" designation at the deepest level accounts for any remaining forms of poplar and aspen wood in the rough not otherwise specified.