Ginkgo wood is primarily sourced from the United States, particularly from the Ginkgo biloba trees that are native to the region. The Ginkgo tree, also known as the maidenhair tree, is one of the oldest living tree species, with fossil records dating back over 270 million years. In the United States, the most significant Ginkgo wood supply comes from the states of Illinois, Indiana, and Kentucky, where the trees are abundant and well-suited to the climate. The wood is highly valued for its durability, resistance to decay, and unique grain patterns, making it a sought-after material for high-end furniture, flooring, and carving.

The preference for Ginkgo wood in the United States can be attributed to several factors. Firstly, the wood's exceptional durability is well-documented. According to a study published in the Journal of Wood Science, Ginkgo wood has a service life of over 100 years when used in exterior applications, making it an ideal choice for long-lasting structures. This durability is due to the high concentration of natural oils and tannins in the wood, which act as natural preservatives.

Secondly, the unique grain patterns of Ginkgo wood are highly sought after by artisans and woodworkers. The wood's grain is typically straight and uniform, with a fine, even texture that allows for intricate designs and detailed carvings. This aesthetic appeal, combined with the wood's strength and resistance to cracking, makes it a favorite among craftsmen.

Additionally, the environmental impact of sourcing Ginkgo wood is relatively low compared to other hardwoods. Ginkgo trees are fast-growing and can reach maturity within 20 to 40 years, making them a sustainable resource. Furthermore, the trees are highly resilient and can thrive in urban environments, which reduces the need for extensive land clearing or deforestation.

Data from the United States Forest Service indicates that there are over 1.5 million Ginkgo trees in the United States, with the majority located in the Midwest. This extensive population ensures a steady supply of Ginkgo wood for the domestic market, as well as for export to other countries where the wood is also highly valued.

In conclusion, Ginkgo wood is sourced primarily from the United States, with the states of Illinois, Indiana, and Kentucky being the main suppliers. The wood's exceptional durability, unique grain patterns, and environmental sustainability make it a preferred choice for high-end applications. With over 1.5 million Ginkgo trees in the United States, the supply is ample to meet both domestic and international demand.