· overwintering mandevilla plants is not difficult, but it does require some careful planning and attention to detail. How do you overwinter a mandevilla plant? How do you care for a mandevilla vine in winter? How do you take care of a mandevilla plant? Find out how to trim, water, and fertilize your mandevilla vine for optimal growth and bloom. · heres how to care for your mandevilla vine indoors in winter so it thrives and flowers year after year. · learn how to successfully overwinter your mandevilla plants with our expert tips and ensure they thrive next season! · you can overwinter mandevilla as a houseplant to enjoy foliage over the colder months, or let the plant go dormant and store it over winter to bring it out again in spring. Prune it, inspect it for pests, and treat if necessary before bringing the plant inside. Can mandevilla overwinter? · learn how to overwinter mandevilla , including two overwintering options, what to do after you have brought it indoors, and whether or not you should cut it back for winter. Bring your mandevilla indoors when nighttime temperatures are below 50°f. By following the steps in this guide, you can successfully overwinter your mandevilla plant and ensure that it thrives for many years to come. · learn how to overwinter mandevilla plants indoors or outdoors depending on your climate zone.