If you google it, you will get all the information you need.:)

Tips For Mandevilla Care
When you buy your mandevilla vine, chances are that it a lush plant full of flowers. You may wish to transplant it to the ground or into a bigger or more decorative container. Mandevilla flowers need sandy, well draining soil with plenty of organic material mixed in with it. A good soil mix for mandevilla plants include 2 parts peat moss or potting soil to 1 part builder’s sand.
An important part of mandevilla care is the kind of light they receive. Mandevilla vines need some shade. They enjoy bright indirect or filtered sunlight, but can get burned in direct, full sunlight.

In order to get the best mandevilla flowers throughout the summer, give your mandevilla plant a high phosphorus, water soluble fertilizer once every two week. This will keep your mandevilla vine blooming wonderfully.
You may also want to pinch your mandevilla. This method of pruning your mandevilla will create a bushier and fuller plant. To pinch your mandevilla vine, simply use your fingers to pinch off 1/4 – 1/2 inch off the end of each stem.
Mandevillas are vines and they will need some kind of support in order to grow as best they can. Be sure to provide a trellis or some other support for your mandevilla vine to grow up.