Rootstock obtained from the stump, today it is the most used for modern high density orchard. There are several used clonal selections of M9 often commercially spread under various denominations. As a dwarfing rootstock, the important characteristics are: the low polloniferous activity, it prefers fertile, permeable, well irrigated soils. It's interesting for high-density plants even when grafted with varieties with standard vegetative habitus and intermediate and high vigor.