Venus flytrap
The Venus flytrap is a carnivorous plant that captures insects with its specialised hinged leaves.
Also known as: Dionaea muscipula, flytrap
How big is it?
3 cm · defined open-trap length
Also 1.181 in
Defined open-trap length · defined specimen
Typical recorded range: 2 cm to 4 cm.

A little perspective
Venus flytrap vs UK £2 coin: length comparison
The open-trap length of a Venus flytrap is about 1.06 times the diameter of a UK £2 coin.
The Venus flytrap is a carnivorous plant that captures insects with its specialised hinged leaves.
A UK £2 coin is the bimetallic two-pound denomination of the pound sterling circulation coinage.
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions. Horizontal rulers compare the selected spans; vertical brackets also identify height on the artwork.
Measurements, assumptions & sources +
Venus flytrap
Defined open-trap length: 3 cm; defined specimen; range 2 cm–4 cm.
A defined mature Venus flytrap leaf with a 3 cm open trap. The calibrated length spans one trap, not the whole plant; cultivar and growing conditions affect size.
Defined examples — our methodology
The marked defined open-trap length is calibrated. Unmeasured illustration details are representative.
UK £2 coin
Specified diameter: 2.84 cm; specified.
Bimetallic UK two-pound circulation format: 28.4 mm diameter, 2.5 mm thickness and 12 g mass. Bimetallic means an outer ring and inner disc; earlier single-metal or collector issues are not the comparison input.
Royal Mint — bimetallic £2 specifications
The marked specified diameter is calibrated. Unmeasured illustration details are representative.
Use the visual comparison to explore its scale, then check the measurements and sources.
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Why this measurement?
Why we use 3 cm
We compare the open-trap length of a Venus flytrap. This is an illustrative comparison value, not a claim that every example is the same. The recorded range is 2 cm to 4 cm.
A defined mature Venus flytrap leaf with a 3 cm open trap. The calibrated length spans one trap, not the whole plant; cultivar and growing conditions affect size.
The marked vertical span follows the measured feature, not the edges of the image. How calibrated comparisons work →
Recorded properties
Dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 3 cm | 2 cm to 4 cm | defined specimen |
Around this scale
Explore nearby values.
Compare examples with lower, similar and higher values. Each card names the measurement being compared.
Nearest lower valueEveryday objectsUK £2 coin2.84 cmSpecified diameterA UK £2 coin is the bimetallic two-pound denomination of the pound sterling circulation coinage.
Around the same scaleEveryday objectsBottle cap2.8 cmDiameterA bottle cap is a small closure used to seal the opening of a bottle and keep its contents secure.
Nearest higher valueLiving thingsGarden snail3.5 cmShell lengthThe garden snail is a terrestrial mollusc with a coiled shell, often found in gardens and damp environments.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
There’s always another scale






