QuestionsHow to growHeat RequirementsHouse Plantsplant called lucky heather 0 Vote Up Vote Down Eileen Delany asked 12 years ago My friend has a small heather plant. She wants to know if it is an indoor or outdoor plant? 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 6 years ago Some heathers are hardy and can be planted outdoors, some are not and can be killed by frost. The more delicate ones generally have a finer, lighter structure.