Light Meter Guide
Convert lux readings to plant-friendly recommendations and get species-specific placement advice.
Light Meter Guide
Convert lux readings to plant-friendly recommendations
Use a lux meter app or device to measure light at plant leaf level
Light recommendations based on compiled botanical research • Seasonal variations affect light intensity • Measure at leaf level
How to Measure Light
Get a Reading
Use a lux meter app or physical device. Hold it at the plant's leaf level where it receives the most light.
Select Your Plant
Choose your plant species from our database of 10 popular houseplants with verified light requirements.
Get Recommendations
See if your light is ideal, too low, or too high. Get specific placement tips and warning signs to watch for.
Understanding Light Categories
Very Low
< 500 lux
Interior rooms, far from windows
Best for: Snake plants, ZZ plants
Low
500-1,000 lux
North windows, deeply shaded
Best for: Peace lilies, pothos
Medium
1,000-3,000 lux
East windows, 3-5 ft from south
Best for: Calathea, philodendron
Bright Indirect
3,000-8,000 lux
Near east/south with sheer curtain
Best for: Monstera, fiddle leaf fig
Data Sources
Light requirements are derived from the Plant Grail knowledge base, compiled from horticultural research and documented indoor growing conditions. Measurements assume typical home environments with standard windows.