In vegetable production in greenhouses, most of the damage from continuous cropping is caused by soil-borne diseases and nematodes. As a countermeasure to the damage caused by soil-bone diseases such as Fusarium wilt, bacterial wilt and nematodes, grafting of fruit-bearing vegetables is popular in Japan. The proportion of the area producing grafted plants of watermelon, cucumber, melon, tomato and eggplant rose to 57% in 1980, and to 59% in 1990. Plants are grafted onto various rootstock species and varieties, by a range of grafting methods. Recently, the tube grafting method has been developed for plugs. This is popular in the manual grafting of tomato, eggplant and cucumber plants. Grafting robots and healing chambers have been developed, and are used in nurseries producing grafted plugs. Since grafting gives increased disease tolerance and vigor to crops, it will be useful in the low-input sustainable horticulture of the future.