grafted vine, a vine consisting of a scion grafted to a rootstock, typically produced by a grapevine nursery or a viticulturist. The vines may be sold by the nursery as a growing plant soon after grafting, with limited root and shoot growth and ready for planting in early summer, or as a dormant vine. The latter are grown on in a field nursery after grafting for around six months, are then removed, trimmed of shoots and roots, and prepared for despatch for planting the following spring.
Most countries in the world have phylloxera infestation, and therefore grafted vines are common. Countries such as Chile, where phylloxera is not present, or Australia, where phylloxera is contained by quarantine, may use ungrafted vines, which are not resistant to phylloxera but grow satisfactorily in many situations and are cheaper.