Once he determined on cactus growing as a career, Yeh asked his friend to mail seeds from Japan of some 2,000 different strains.
「仙人掌體積小，壽命長，容易栽培，放在室內又可達綠化之美，不正是適合生存在未來的環境下嗎？」靈機一動，葉福棋要求住在日本的朋友弟弟代購郵寄仙人掌的種子或幼苗回台試栽，如此慢慢收集了兩、三百種，愈來愈有心得。