Broussonetia papyrifera, also called paper mulberry, can be harvested one year after being planted, and may be grown in China, Japan, Thailand, and other southeast Asian countries.
尤其是構樹（又名楮樹），種植一年即可收成，分佈地區很廣，中國、日本、泰國、東南亞等地均可生長，自古為我國高級書畫用紙。