Dionaea m. King Henry (potted)Dionaea King Henry Giant Venus Flytrap If size matters in your carnivorous plant collection, King Henry reigns supreme. This cultivar of Dionaea muscipula is famous for producing some of the largest traps of any Venus flytrap, with individual traps reaching up to 1. 75 inches long under ideal conditions. Its a vigorous grower with a commanding presenceperfect for beginners and collectors alike. King Henry displays a classic green coloration with red