Mandevilla on Trellis
Can Mandevilla stay outside for winter or does it need to be dug up in Falmouth, Mass. ?
Certified GKH Gardening Expert
In areas such as yours, you may want to bring it indoors over winter. In warmer regions, it can be left outside. Here is an article that you may find helpful: https://www.gardeningknowhow.com/ornamental/vines/mandevilla/mandevilla-plant.htm