Mandevilla vines are one of the more unusual and exotic tropical flowering plants that are available. They belong to a group of plants that were once called Dipladenia splendens. As a native plant to Brazil, the mandevilla prefers mild temperatures and lots of sun. If you live in regions that experience frost, you should plant a mandevilla vine in a container and overwinter it indoors.
Choose a container for planting the mandevilla vine. The ideal container needs to have at least four drain holes. It should be large enough to prevent the roots from becoming bound, but not so large that you cannot easily carry the container indoors over winter.
Situate the growing container in a sun-filled location, if you live in cooler northern climates. For warmer southern climates, the preferred location should provide morning sun followed by afternoon shade. The ideal location should also provide some support for the mandevilla as it grows, such as along a fence, trellis or arbor.
Fill up the container about 1/2 full with a high quality potting mix. If you want to create your own potting mix, measure out equal amounts of sand, perlite or vermiculite, compost and peat moss.
Water the plant thoroughly, then flip the pot upside down. Hold the plant at the top of its root system. Wiggle the container back and forth a few times until you can slide the container off the root system.
Set the mandevilla plant into its new growing container. Add potting mix to the container until the mandevilla is planted at the same level in the pot as it was previously growing.
Mix together 2 to 4 tablespoons of a 5-10-5 starter solution plant food plus root stimulator into 2 gallons of water. Pour the mixture into a 5-gallon, or larger, bucket. Place the newly planted mandevilla into the water and allow it to soak up the mixture until you can see the potting mix become moist, then remove the plant from the water.