Mighty 'Mato Grafted San Marzano Tomato Plant - Easy to Grow/More Fruit - 4" Pot Grafted vegetable plants began in Korea and Japan at the end of the 1920s Easier to grow; more drought resistant & requires less nutrients More resistance to disease. Larger harvests over a longer period of time Improved quality and quantity of fruit Grafted tomatoes are the easiest and best tasting tomatoes you will every grow!