Citrus rootstock

Citrus rootstock are plants used as rootstock for citrus plants.

A rootstock plant must be compatible for scion grafting, and resistant to common threats, such as drought, frost, and common citrus diseases.

Five types of rootstock predominate in temperate climates where cold or freezing weather is not probable, especially Florida and southern Europe:

A double graft union of diamante citron upon sour orange rootstock.