Croton houseplants are tropical, tender perennials native to climates that rarely experience mild frost. Outdoor plantings are restricted to USDA zones 10 and 11, which don't experience hard frost or extended freezing periods.
About this Author
Michael Logan is a writer, editor and web page designer. His professional background includes electrical, computer and test engineering, real estate investment, network engineering and management, programming and remodeling company owner. Logan has been writing professionally since he was first published in "Test & Measurement World" in 1989.