The obvious choice for the top spot. D. capensis is almost offensively easy to keep alive indoors — it asks for a sunny windowsill, pure water in its tray, and nothing else. In return it produces a constant supply of sticky red tentacles that catch any fungus gnat that comes within range, flowers regularly throughout the year, and self-seeds into neighbouring pots if you’re not watching.

The thing that surprises people about D. capensis is how actively it moves. When an insect lands on the leaf, you can watch the tentacles slowly curling inward over the next few minutes. It’s hypnotic. You’ll spend more time watching it than tending it, which is exactly what you want from a houseplant.

One mild caveat: it will absolutely spread if given the chance. Seeds germinate freely in any nearby pots of appropriate media. Whether this is a feature or a bug depends on your perspective — most people who grow it indoors end up with a small colony within a year and consider this a win.

Butterworts are the houseplant carnivores that don’t look like carnivores. They look like a pretty little succulent with slightly waxy, pale green or pink-tinged leaves. There’s nothing dramatic about them at first glance. Then you notice the fungus gnats stuck to the surface and everything clicks.

Mexican Pinguicula — species like P. gigantea, P. moranensis, and P. esseriana — are the ones to go for indoors. They tolerate lower humidity than most carnivorous plants, sit perfectly happily in a normal living room, and produce delicate little flowers that look like violets in spring. They also have a neat seasonal trick: in winter they shift into a tight, non-carnivorous succulent rosette and need almost no water at all, then quietly switch back to their gnat-catching form as days lengthen. It happens slowly enough that you might not notice until you realise the leaves have doubled in size.

If you have a fungus gnat problem and want a plant that will quietly, elegantly solve it — this is the one.

Nepenthes × ventrata is the outlier on this list in one important way: it’s top-watered, not tray-watered. Keep that straight from the start and everything else is simple. It grows year-round with no dormancy, tolerates the lower humidity of a normal home better than most Nepenthes, and produces proper hanging pitchers — the kind with a lid — that fill up over several weeks as they develop.

The pitchers are what makes this one special as a houseplant. Sundews and butterworts are subtle; you have to look closely to see what they’re doing. A Nepenthes with a cluster of pitchers dangling from a shelf is an unmistakable conversation piece. Guests always ask about it. The answer is always satisfying.

It grows as a climbing vine over time, which means it either needs something to attach to or periodic trimming. A trailing stem over a bookshelf works surprisingly well. It also responds very noticeably to humidity — if pitchers abort without forming properly, that’s the first thing to address. Grouping it with other plants or sitting it near a humidifier usually solves it.

Most people haven’t heard of Utricularia sandersonii and most people who grow it can’t stop recommending it. It’s a South African terrestrial bladderwort that looks like a tiny spreading groundcover covered in miniature white and purple flowers that bloom almost continuously. It flowers so prolifically and for so long that it’s hard to believe it’s a carnivorous plant at all — the trapping happens underground, in microscopic bladders that catch protozoa and water bears in the growing media, completely invisible from above.

Indoors it behaves beautifully. It spreads across the surface of its pot, hangs over the edge slightly, flowers essentially year-round in good light, and asks for nothing beyond pure water and a sunny spot. It’s also practically indestructible — if you forget it for a week, it carries on. If you divide it, both halves carry on. It’s the kind of plant that makes you feel like an excellent grower without doing much to earn that feeling.

It’s also a genuinely useful conversation piece: “that pretty little flowering plant on your windowsill is carnivorous” lands differently than you’d expect.

D. aliciae often gets overshadowed by D. capensis but it deserves its own spot on this list. It’s a compact rosette sundew from South Africa — flat, symmetrical, and densely covered in red tentacles that catch the light beautifully. Where D. capensis grows upright and tall, D. aliciae stays low and neat: a proper flat rosette that fills its pot evenly and looks like a tiny jewelled star.

It’s a slightly better choice than D. capensis if you want something tidier and less inclined to spread everywhere. It doesn’t self-seed as aggressively, it stays within its pot, and the rosette form makes it easier to keep looking presentable on a windowsill where you actually want it to look good. The tentacles colour up a deep crimson in strong light, which is genuinely beautiful.

Care is almost identical to D. capensis — tray of pure water, plenty of sun, leave it alone. Hampshire Carnivorous Plants stock it year-round as DS001 and it’s one of the first things they recommend for beginners, which tells you everything you need to know.