Many tropicalplants do well overwintering indoors as houseplants, too!The easiest way to overwinter most flowering tropicalplants is to let them go dormant in a cool space. Some plants can overwinter as houseplants. The most successful are geraniums, Boston ferns, and tropicalplants such as begonia, caladium, coleus, and hibiscus. Mandevilla and hibiscus plants can be overwintered indoors, provided there is a bright-light location. Or they can be stored as dormant plants for the winter months. Choose a location to overwinter your plants. Most tropicalplants need high heat, bright light, and high humidity to continue growing and stay alive. Overwinteringtropicalplants takes some care but you will be rewarded with more and stronger plants for next summer's garden.Canna and Calla Lilies. tropicals in planter. “In essence, tropicalplants are treated as annuals in the landscape, but with a few tricks and some practice, these unique tropicalplants can be overwintered and revived for the next year... By learning to overwinter your tropicalplants, you can keep your favorites, add to your collection over time, begin next season with bigger specimens, and save money in the process. By overwinteringtropicalplants, you’ll start next season with a big leg up — and save lots of cash in plant replacement. Expose overwinteredplants to sun gradually over a few weeks. If overwintering Asclepias curassavica, take stem cuttings in early spring to start new tropical milkweed plants. The first is to pot your banana plant and keep it indoors where the temperature remains between 40 and 70 degrees F. If your banana plant is too tall, it can be cut back to the.