How big is the biggest Venus flytrap?

Expected Size

Venus flytraps have a central stem that connects to the underground roots. From that stem, branches spur to become traps. Most Venus flytraps grow five to ten traps at a time. The expected mature width size of Venus flytraps is 5 inches (12.7 cm) in diameter. When you look at a Venus flytrap, you will notice the center. The center of the plant is where all the leaves originate. Through that center, you can expect a 5-inch diameter. Vertically, Venus flytraps can be as tall as a foot (30 cm). And, the size of each trap (just the jaw like structure) would be about one inch (2.5 cm) long.

Dimension Summary

  • Horizontally: 5 inches in diameter
  • Vertically: 1 foot
  • Trap size: 1 inch

Venus flytrap biggest size

What is the largest Venus flytrap?

After some online research, I was not able to find Venus flytrap size records. The lack of recording might be due to the fact that Venus flytraps are not large plants (Unfortunately, for all those science-fiction fanatics, there are no human-size Venus flytraps). However, some cultivators have bred Venus flytraps clones that surpass the standard Venus flytrap size.

One of these clones is the Dionaea B-52, which is considered a giant Venus flytrap. The Dionaea B-52 is “A formidable clone produced by Henning Von Schmeling of the United States. The cultivator doesn’t signify the giant jet bomber but happened to be the code for plants he was needing. Vigorous and impressive, these large specimens also clump, producing a mass of large, yawning traps.”(D’Amato, 2013). Dionaea B-52 traps can reach the size of two inches, which is double the size of standard Venus flytraps. These plants are also sold commercially in-stores and even online!

How to grow a large Venus flytrap?

The best strategy to grow Venus flytraps to their full size is to follow the care instructions. Venus flytraps are native to South Carolina and North Carolina in the United States. They are unique plants and require particular care to thrive. Here is a summary list of care instructions to grow large Venus flytraps.

Water: Venus flytraps need a lot of water. Your soil needs to be moist at all times. Also, you can’t water your plant with tap water (it has too many minerals and salts). Instead, use rainwater or distilled water.

Light: Venus flytraps require a lot of light. They must be placed in a strategic spot, where they can receive 12 hours of sun a day. However, Venus flytraps can live in partial shade if they receive 4-5 hours of direct sunlight.

Feeding: Venus flytraps can survive several months without being fed. However, they won’t thrive. For best results, feed your Venus flytrap once every two weeks or once every month. For more information, you can read our complete guide on how to feed a Venus flytrap:

How to Feed a Venus Flytrap?- Live and Dead Prey Options

Soil: Venus flytraps require nutrient-free soil with good drainage. Long-fibered sphagnum moss and sphagnum peat moss are both suitable options.

Fertilizer: There is no need to fertilize the plant. You can actually kill your plant with fertilizers.

It is easy to make mistakes when you are a novice grower, especially with Venus flytraps. But, remember that being a successful carnivorous plant grower requires patience, practice, and attention to detail. Learn about the species you are growing, build a proper setup, and be attentive to your plant’s needs. Then, you will cultivate large and healthy Venus flytraps.

Venus Flytrap Size vs. Growing Cycle

Venus flytraps undergo several stages every year. Generally, they will reach their largest size during spring or summer. And they will shrink during winter due to dormancy.

During late fall and winter, Venus flytraps will go dormant. Their dormancy period is similar to animal hibernation. When temperatures start to drop, Venus flytraps go dormant. During dormancy, their leaves wither, and the plant reduces in size. Since the physical changes due to dormancy are pronounced, the best time to photograph and measure your plant is during the warmer months. Finally, in the spring, Venus flytraps return to their original state and continue to grow and develop.

Venus flytrap flower vs growth After dormancy, Venus flytraps start flourishing. Then, during spring, Venus flytraps grow thick cylindrical structures. Those tubular structures will turn into flowers.

Venus flytraps spend large amounts of energy producing flowers. After flowering, the plant will be weak for several months, and its growth will stagnate. If you want to make sure your Venus flytrap continuous to grow through the season, I would highly suggest cutting the flower stalks and preventing your plant from flowering. When spring starts, keep close attention to your plants. As soon as you notice a cylindrical trunk growing, cut it off. You might have to repeat this drill a few times since Venus flytraps attempt to grow several flowers during the season

Related Questions

What is the largest prey a Venus flytrap can eat?

Many people have the misconception that Venus flytraps can eat prey a lot larger than its trap. Even though Venus flytraps might be able to trap a reasonably large bug, they won’t always consume it. The rule of thumb is that Venus flytraps will only eat prey that is 1/3 of the size of the trap. Anything larger than that will be too difficult to digest. If the trap can’t close entirely after trapping a meal, the plant won’t process it. In those cases, the insect might still die because it is stuck. But even then, the plant won’t be able to digest it. When a trap can’t consume prey, it will witter, turn black and die.

Can a Venus flytrap harm a human?

Venus flytraps are safe for humans. Their traps might seem chilling when looked at closely, but they are surely not strong or big enough to hurt you. If you stick your finger inside a trap, you will feel it closing, but very mildly.

Generally, if you encounter Venus flytraps, avoid triggering the traps with your fingers. Venus flytraps employ significant amounts of energy to control those traps. The extra effort won’t kill them, but it will weaken the plant. Instead, observe the trapping mechanism by feeding the plant. It is amusing to watch Venus flytraps in action! If you are interested in feeding a Venus flytrap, we have written a guide on how to feed a Venus flytrap. The article suggests prey options and the best methods to keep the plant healthy.



My name is Nelly, and I am the owner of Venus Flytrap World. Growing carnivorous plants is a unique and rewarding experience. A few years ago, I started growing Venus flytraps and experimenting with other carnivorous plant species. I have done tons of research to perfect my setup and care practices. In this site, I share everything I have learned.

Recent Posts