By grafting different plants onto a parent stem, he can influence the shape and color of future generations. Chen often has to wait for years for the right flower to open.
將成熟的種子採下來播種在質地鬆軟、易保留水份的栽培介質如水苔上，四年後才會開花，育種者必須等花開後才會知道授粉育種的成果如何。