Mandevilla plants are striking tropical climbers native to hot climates, so it may come as no surprise that they only survive as perennials in US hardiness zones 10 and above. As they cannot tolerate cold, you need to overwinter mandevilla indoors unless you are blessed with a tropical or subtropical climate.
The stunning flowering climbers produce vivid trumpet-shaped blooms that attract hummingbirds and butterflies during the season. While mandevilla are fast-growing climbers that can be treated as annuals in cooler climates, it is not difficult to overwinter mandevilla indoors so you can nurture plants for several years.
