Characteristics and Uses of Tong Bark: Understanding the Agricultural Value of Paulownia Bark

Tong bark is the collective term for the bark of Tong tree species, with common sources including Paulownia, Vernicia fordii (tung tree), and Firmiana simplex (Chinese parasol tree), among which Paulownia bark is the most commonly seen, and it is also known among the public as white Tong bark. Tong trees are mostly deciduous trees that grow rapidly and are cultivated in many regions of China, making bark resources relatively easy to obtain.

In appearance, Tong bark is mostly grayish-brown or brownish-brown, with a rough surface, longitudinal cracks, and obvious lenticels. The bark of old trees is thicker in texture and easily peels off in sheets. The bark of different tree species varies slightly in color, thickness, and odor. When collecting, healthy trunks or thick branches are generally chosen, and after stripping, the bark is sun-dried for storage.

In traditional applications, Tong bark is often classified as a medicinal material and is mostly used externally. Folk belief holds that it has effects such as dispelling wind and reducing swelling, and both internal use and external application should follow professional guidance. In agriculture and daily production, Tong wood is light in weight and straight in grain, and can be used to make furniture, instrument soundboards, and packaging materials. The stripped bark and pruned branches and leaves can also be used as firewood.

It should be noted that the seeds and some tissues of Vernicia fordii contain toxic components, and accidental ingestion may cause physical discomfort. Before collecting and using it, the tree species should first be clearly identified to avoid confusion. If the purpose is to obtain bark, attention should also be paid to harvest intensity, as stripping too much bark can easily weaken the tree's vigor and induce pests and diseases. Only reasonable arrangement can balance utilization and tree protection.