Alice du Pont has large, pink, bell-shaped flowers produced on a vigorous vine. The dark, glossy leaves have a leathery feeling. If you have seen a big, pink-flowered vine growing up a neighbor's mailbox, this was probably the plant. As with almost every other plant I write about, it needs well-drained soil or it will die. For best flowering, you will want your Mandevilla to receive at least six to eight hours of sunlight a day.
Full sunlight is better.
Since it is such a vigorous vine and flower producer, it needs small doses of fertilizer every two to three weeks. Use a balanced, water-soluble fertilizer. Be sure a maintain moisture during the hot, dry times of the summer. A prolonged period without water may prove fatal to the plant. Last year, I saw two different plantings of Mandevilla that made me want to cry because they weren't at my house.