System was upgraded and restored 10/8/2021 - Email features have been reactivated
'Swingle' is resistant to tristeza and Phytophthora foot rot, blight, cold, and citrus nematode. However, in some cases, trees budded onto 'Swingle' that were infected with 'severe' strains of exocortis or cachexia remained stunted and produced a bud union crease. 'Swingle' is moderatlely salt tolerant but is not adapted to heavy clay soils or calcareous soils. 'Swingle' was observed to be particularly well adapted for use with grapefruits and in some cases 'Lisbon'-type lemons.