The mandevilla plant has become a common patio plant, and rightfully so. The brilliant mandevilla flowers add a tropical flair to any landscape. Mandevilla plants are fairly easy to care for as long as you get their growing conditions right. These vines thrive in lots of light, warmth, and moisture. Plan to water whenever the soil begins to dry out, and feed your plant during the growing season. Another important part of mandevilla care is the type of light they receive. Mandevilla vines need some shade. They enjoy bright, indirect light or filtered sunlight, but can get burned in direct, full sunlight.