Key takeaways
- North-facing UK rooms get 200-500 lux in winter — measure yours free with a phone lux meter app
- Cast iron plant (Aspidistra) survives at just 100 lux, making it the toughest low-light species
- Light drops 50% at one metre from a window, so position matters more than compass direction
- Variegated plants revert to plain green in low light to maximise photosynthesis
- Peace lily flowers less in shade but its foliage stays healthy for years
- No houseplant survives total darkness indefinitely — every species needs some natural light
- ZZ plant, snake plant, and pothos all tolerate 200-500 lux typical of UK winter rooms
Our team produces practical UK gardening guidance from source research, contributor records and established horticultural practice. Editorial standards are overseen by Matt W.