Houseplant owners are sometimes tricked into believing that their tropical plants go through a rest or dormancy period when brought indoors for the winter. Growth slows or halts, and they don’t need water or fertilizer as often. Some tropicals such as caladium, canna lily, and alocasia (plants with tubers) do naturally take a rest due to cooler temperatures and shorter days, while others are programmed to defoliate in response to environmental shifts from wet to dry season. Most tropical plants, however, can still thrive indoors in the cooler months if set up for success!