Native to northeastern India, where it still grows wild, the dwarf rough lemon seems to have been taken to southeast Africa by the Portuguese toward the end of the fifteenth or early sixteenth century and thence to Europe. It doubtless reached the New World not long thereafter. The dwarf rough lemon is highly hardy and is important as a rootstock in many parts of the world—notably India, South/North Africa, Australia, Argentina, Brazil.
Dwarf Rough lemon is the champion of hardy lemons. It has been grown successfully in New England and can withstand winter temperatures of -5 F
Fruit medium in size, of highly variable form but usually oblate to elliptic-oblong; commonly with irregularly furrowed or lobed basal collar or neck; usually with broad apical nipple surrounded by a deep irregular areolar furrow. Rind medium-thick; surface typically deeply pitted, and rough or bumpy, sometimes ribbed; easily separable; color lemon-yellow to brownish-orange. Segments about 10; axis large and hollow. Flesh color light yellow to pale orange; medium juicy; flavor moderately acid. Crops heavy throughout the year and also in winter. Very Fragrant, great house/patio dwarf tree.
USDA hardiness zone 5 to 11 on the coast ( average annual low -5F to 15F).