As early as 1980, Yuen Foong Yu undertook reforestation in seven locations in eastern Taiwan, totaling over 1,000 hectares, including cultivation of some species of rare trees unique to Taiwan.
早從民國六十九年起，永豐餘就在台東縣內七處林場造林，面積廣達一千公頃，以優美的銀合歡為主，同時也包括台灣稀有樹種的培育。