Grafting can join scions with desirable qualities to root stock that is strong and resists disease and insects. Smaller trees can be grafted with older scions.

• 接穗可以通过嫁接到砧木上而得到希望的那样强健并且可以抵御疾病和昆虫的侵蚀。较老大接穗可以嫁接到小树上。