PROBLEM TO BE SOLVED: To provide a method for effectively improving the working efficiency of changing the color of the orchid petal.SOLUTION: This method for changing the color of the orchid petal includes the steps of: first installing a storing space in a peduncle part of an adult-plant providing a solid stain smaller than the diameter of the peduncle inserting the solid stain into the storing space using a suction device and further supplying water to the adult-plant before or after the insertion to assist dissolution and adsorption of the solid stain. Thus, the adult-plant is enabled to change the color of the pedal quickly and equally, so that the color of the pedal is made rich and clear to achieve the dye effect which can make endless changes and has high added value.COPYRIGHT: (C)2013,JPO&INPIT【課題】蘭の花弁の色を変える方法の提供。【解決手段】本発明は蘭の花弁の色を変える方法に関し、そのステップは、まず成植物の花梗箇所に収納空間を設置し、花梗の直径より小さい固体染色剤を用意し、吸引器を用いて該固体染色剤を収納空間内に挿入する。また、固体染色剤を挿入前或いは挿入後に、成植物に水分を供給して固体染色剤の溶解及び吸着を助ける。これにより、成植物は迅速に均等に花弁の色を変化させられるため、花弁の色彩を豊富かつ鮮やかにし、千変万化で尚且つ高付加価値のある染色効果を達成することができる。【選択図】図1