Dionaea muscipula J.Ellis

Venus flytrap

Family: Droseraceae
Native to: Coastal North and South Carolina
Habit: Rosette-forming perennial

Where it comes from

A radius of about a hundred miles around Wilmington, North Carolina, and nowhere else on Earth. Kew gives the native range as eastern North Carolina to eastern South Carolina.¹ The US Fish and Wildlife Service’s 2023 assessment puts it more finely: historically twenty-one counties, now eleven in North Carolina and one in South Carolina — Horry — with 74 populations extant and 66 extirpated. Roughly 880,000 plants survive, and two thirds of them are in three sites.²

It grows in wet, sunny, nutrient-poor pine savanna that burns regularly. Every part of that matters in a pot: full sun, permanently damp, starved soil, and open air.

The conservation picture is two different things that get collapsed into one. It is listed as Vulnerable on the IUCN Red List and on CITES Appendix II,¹ but the US Fish and Wildlife Service determined in 2023 that federal listing was not warranted.² Protection is state-level: poaching has been a felony in North Carolina since 2014.³ NC State’s own plant toolbox calls it an endangered species that cannot legally be collected, which overstates the federal position.⁴

Naming and description

John Ellis published the name, and where he published it is genuinely disputed. Kew gives Nova Acta Regiae Societatis Scientiarum Upsaliensis, 1773.¹ IPNI gives the St James’s Chronicle — a London newspaper — for 1-3 September 1768, and a 1989 paper in the Botanical Journal of the Linnean Society supports the newspaper.⁵⁶ The type is not a specimen but a published illustration, lectotypified in that same paper.⁶

Muscipula means mousetrap.

Darwin is quoted on this plant constantly, and almost always wrongly. He did not write “the most wonderful plant in the world”. What he wrote was that it is “one of the most wonderful in the world”.⁷⁸

There are 130 registered Dionaea cultivars with the International Carnivorous Plant Society, which is the registration authority.⁹¹⁰ “Typical” is not one of them — it is a trade label for an unselected plant, not a cultivar name. This one is unnamed, so the page claims nothing beyond the species.

Fun facts

The snap is not muscle, it is buckling. The trap lobes are held in a doubly curved shape under elastic tension, and the closure is a release of stored energy rather than a movement the plant powers — about a hundred milliseconds, which is among the fastest movements in the plant kingdom.¹¹
It counts, and the number is five. Two action potentials close the trap. Three or more start switching on the genes for digestive enzymes, with five needed before that expression becomes significant, and the gene for the nutrient transporter that absorbs the results goes up sixtyfold across five to sixty stimulations.¹²¹³ So the plant distinguishes a raindrop from a struggling insect by tallying, and only pays for digestion once the count says the meal is real.
The memory between the first touch and the second is chemical, not electrical. This was settled with a transgenic calcium reporter: what builds on the first trigger and decays over roughly thirty seconds is cytosolic calcium.¹⁴ If you touch one trigger hair and then wait too long, the trap has not forgotten in some vague sense — the calcium has simply fallen back below threshold.
Feeding it hamburger really will kill the trap, and that one is supported.¹⁵ Snapping traps for fun is a lesser sin than the internet suggests: it wastes energy and takes the trap out of service for twelve to twenty-four hours,¹⁶ but the frequently repeated claim that a trap dies after three or four closures is not something I could find in any authority, and I looked at nine of them. One small mercy for anyone with a curious cat: the ASPCA lists it as non-toxic to dogs, cats and horses — and this is the first of five plant groups on this site where the page’s title and its scientific-name field actually agree.¹⁷
Its tap-water damage has a signature. Minerals accumulate in the soil until new leaves emerge as bare petioles carrying small or non-functional traps.¹⁸ If that is what yours is doing, the problem is the watering can rather than the light.

Care

Light: Full sun — as much as you can give it. Indoors NC State quantifies the target as 15,000-25,000 lux for around fourteen hours a day, which is a grow light rather than a windowsill. This is not a bright-indirect plant and it is not a terrarium plant: it wants sun and moving air.
Water: Rainwater, distilled or reverse osmosis. Tap water only if you have measured it below 90 ppm total dissolved solids — and filtering does not remove dissolved salts. Stand the pot permanently in a tray of pure water, with the water more than 5 cm below the soil surface. The failure mode is slow and diagnostic: minerals accumulate until new leaves come up as bare petioles with traps that do not work.
Humidity: Not the issue people think it is. No carnivorous-plant authority publishes a figure, and an enclosed, still, humid case is a worse bet than an open sunny windowsill — Botrytis turns up in enclosed spaces, and the treatment is more air movement and more light.
Temperature: Happy from around 70-95 °F (21-35 °C) in summer. For the winter rest, 35-50 °F (2-10 °C). It is frost-hardy in its own range and does not need protecting from a light freeze once genuinely dormant.
Substrate: Nutrient-poor and deliberately starved: pure sphagnum, pure sphagnum peat, or the standard 1:1 peat and sharp sand. No compost, no added feed, no lime. ICPS advises against perlite and vermiculite as potentially salty, though several growers use perlite without trouble. Peat-free mixes work — the RHS has been trialling them on this species since 2023.
Fertilizer: None in the soil, ever. ICPS puts it as plainly as it can be put: do not fertilise unless you do not mind killing the plant. Nutrition comes through the traps, and that is real physiology rather than theatre — prey triggers the genes for both the digestive enzymes and the nutrient transporters. Feed dried bloodworms or an insect if you feed at all; an established plant outdoors catches its own.
Propagation: Division of the rhizome, leaf pullings taken with the white base intact, or seed — which is slow, several years to a mature plant. Flower stalks cost the plant a lot; cut them off unless you want seed.
Dormancy: The one thing to get right, and it is not as simple as it is usually told. The trigger is photoperiod, not temperature. A plant on a windowsill gets the short-day signal in autumn whatever the room temperature, starts shutting down, and then burns through reserves it cannot replace if kept warm — which is the slow decline over two or three seasons that growers describe. So for a windowsill plant a genuine cold rest is required: at least ten weeks, ideally three or four months, at 35-50 °F (2-10 °C). The exception is real and worth knowing: a plant kept under strong light for fourteen hours a day all winter never gets the signal, and ICPS says outright that such a plant does not need dormancy and that putting it in a fridge is a waste.
Common problems: New leaves emerging as bare petioles with small or non-functional traps is the classic mineral-burn signature — the water is the cause, not the light
A trap that has closed stays out of service for a day or so and then reopens. Triggering them for fun wastes the plant's energy; the often-repeated claim that a trap dies after three or four closures is not something I could find in any authority
Feeding it meat is genuinely harmful — too much protein and energy for what the trap can process, and the trap usually rots
Black, mushy traps in still humid air are usually Botrytis. Treat with more light and more air movement, not less
A plant that fails to wake in spring after a warm winter indoors has usually been dormant without the cold, and exhausted itself
Flower stalks in spring are expensive. Cut them unless you want seed