The leaves are dark green, glossy, oval and 3 to 8 inches long. Even very small plants in 4-inch pots will bloom. This cultivar grows well in hanging baskets. Pinch off tips of new stems to induce dense growth. It grows to 15 feet.
Leaves are opposite, oblong or heart-shaped at the base.
They are 2 to 6 inches long, thin and dark green with gray-green undersides. Provide rich soil. If the plant becomes badly tangled, cut it to the ground in winter. It will bloom on the new growth. Roots are hardy to about 5 F. Mandevilla 'Splendens' is an evergreen similar to 'Alice du Pont', with the same bloom period.