Hard To Kill
The plants on this page share one trait: they store water in thick leaves or rhizomes, so a missed watering doesn't cost them the way it would a fern. Snake Plant, ZZ Plant and Cast Iron Plant each go two to three weeks between waterings without visible stress, which makes them the standard first plant for someone who's killed a few before this one.
Low-maintenance doesn't mean zero-maintenance. These plants still die, just from the opposite mistake: overwatering. A Snake Plant left sitting in wet soil for weeks will rot at the base faster than it would ever suffer from being forgotten. The failure mode to guard against here is a full watering can, not an empty one.
What makes a plant genuinely low-maintenance is a combination of two things: a root system that tolerates letting the soil dry out completely, and leaves thick enough to store water between waterings. Ferns fail both tests. Snake plants pass both.
If your problem is dim light rather than forgetfulness, the closer match is low-light plants, two species, Snake Plant and ZZ Plant, appear on both lists, but the reason they're listed differs. If your problem is being away from home for weeks at a stretch specifically, see low maintenance plants perfect for busy people for the travel-focused version of this list.
FAQ
Which indoor plants tolerate the most neglect?
Snake Plant, ZZ Plant and Cast Iron Plant tolerate the most neglect among common indoor plants, each surviving two to three weeks without water.
What actually makes a plant low-maintenance?
A plant is low-maintenance when its roots tolerate the soil drying out fully between waterings and its leaves are thick enough to store water, which is why succulents and rhizome-based plants outlast ferns and calatheas under inconsistent care.
