Size

• According to the International Society of Carnivorous Plants, Venus flytraps can reach a full size of up to 5 inches in diameter if the plants are grown under ideal circumstances. On a full-sized Venus flytrap, the traps measure about 1 inch in length.
  
  

Encouraging Larger Venus Flytraps

• Plant the B52 cultivar of Dionaea muscipula if your goal is larger traps, as this cultivar produces slightly larger traps than other varieties. You may also clone Venus flytraps featuring larger traps by dividing the plants or through leaf cuttings.
  
  

Misconceptions

• Venus flytraps have adapted to trap and digest insects. Despite certain portrayals in films, Venus flytraps will not become large enough to pose a threat to animals or birds.