Cuphea micropetala CANDY CORN Perennial Seeds! Cuphea micropetala Candy Corn Plant Up for bid are seeds of the Candy Corn Plant. This is a beautiful perennial that gets an abundance of orange-yellow flowers all summer and fall that attract butterflies and hummingbids. They are hardy to at least USDA zone 7b, and possibly colder. These plants would make excellent additions to your rare plant collection, or just make a unique statement in your yard. You are bidding on 5 seeds of Cuphea micropetala.