on a monocrop, of a sterile clone that is. oranges are similar and equally susceptible. if they arnt grafted on a trifoliate orange rootstock(the trifoliate has the benefit of being a wild type orange which is very cold hardy and disease resistant, also posses the spines on thier leaves of ancestral oranges/citrus, the trifoliate is usually not very edible, because they are very bitter)
on a monocrop, of a sterile clone that is. oranges are similar and equally susceptible. if they arnt grafted on a trifoliate orange rootstock(the trifoliate has the benefit of being a wild type orange which is very cold hardy and disease resistant, also posses the spines on thier leaves of ancestral oranges/citrus, the trifoliate is usually not very edible, because they are very bitter)