Unlike older perennial hibiscus varieties that just bloomed on top, the Summerific® series produces buds all along the stems. As a result, the Summerific®Hibiscus series produces flowers nearly three times longer than older varieties too. Bigger, better, more bountiful blooms?!? Bravo! Don’t let the tropical island-like blooms deceive you either…. Summerific® Hibiscus varieties are hardy all the way down to zone 4, so you will get to enjoy this flower show year after year! Encore!