Protecting Tropical Plants in the Winter Our tropical plants have been happy outside over the summer, but cold weather is soon approaching. We need be prepared to bring our tender plants inside for a short freeze or even find them a bright spot indoors for the entire winter.       Before bringing them inside, check for fire ants in the soil. A soil drench with Captain Jack’s Deadbug Brew (with Spinosad) a few days before bringing them inside will kill any ants in the soil.         [...]