Paulownia is a genus of seven to 17 species of hardwood tree. The Paulownia tree is native to China. Its botanical name is Paulownia tomentosa but it is commonly referred to as the princess or empress tree. Paulownia trees produce as many as 20 million tiny seeds per year. They grow easily since its soil type is not important for this tree as long as it is not heavy clay that drains slowly. Flavonoids, lignans, phenolic glycosides, quinones, terpenoids, glycerides, phenolic acids, and miscellaneous other compounds have been isolated from different parts of P. tomentosa plant.