Aptenia cordifolia is a species of succulent plant in the iceplant family known by the common names heartleaf iceplant and baby sun rose. Perhaps the most common plant seen under this name is actually Aptenia 'Red Apple', a hybrid with red flowers and bright green leaves, whose parents are A. cordifolia and A. (Platythyra) haeckeliana. The true species of A. cordifolia has magenta purple flowers and more heart-shaped, mid-green, textured leaves. Native to southern Africa, this species has become widely known as an ornamental plant. This is a mat-forming perennialherb growing in flat clumps on the ground from a woody base. Stems reach up to about 60 centimeters long. The bright green leaves are generally heart-shaped and up to 3 centimeters long. They are covered in very fine bumps. Bright pink to purplish flowers appear in the leaf axils and are open during the day. The fruit is a capsule just over a centimeter long. The hybrid, A. 'Red Apple', has, in some areas, escaped cultivation and now grows as an introduced species. Its far more vigorous growth and ability to root from small bits of stem makes it a poor choice for planting adjacent to wild lands.