Mandevilla Plant Care: [HOW TO] Grow Colorful, Mandevilla Vines There are many varieties of the tropical vining flowers we call the Mandevilla plant, and all are gorgeous and showy. The Mandevilla vine (rocktrumpet plant) has become a popular spring garden center item over the past few years. These vigorous plants make an excellent spring and summertime addition to any landscape, patio or trellis vines and overwinter nicely indoors during the cold winter months. Profile of The Mandevilla Plant The Mandevilla plant is a member of the dogbane family. All parts of this plant are toxic, so take special care to keep pets and kids away. This evergreen plant tends to vine, but it may also grow as a bushy heap or trail along the ground if it doesn’t have a All parts of this plant are toxic, so take special care to keep pets and kids away. This evergreen plant