Weak or slow growth in a very dark position suggests that tolerance is being mistaken for a growth optimum. Bleached or scorched patches after a move into strong sun suggest that exposure changed too abruptly. No light-meter threshold is established.
Light for Sansevieria trifasciata
Sansevieria trifasciata tolerates very low indoor light, but brighter filtered light supports stronger growth. Treat tolerance as a survival range, not a growth optimum.
Plant coveredSansevieria trifasciataSnake plant · Mother-in-law's tongue · indoor container
Check the light reaching the leaves
Best position and light
Sansevieria trifasciata tolerates very low light, but brighter light supports stronger growth. NCSU describes partial sun for part of the day, while RHS gives a range from sun to light shade. Low-light tolerance is not a growth optimum.
Use a bright filtered or partial-sun position when growth is the goal, while a lower-light indoor spot can work for maintenance. Protect foliage from abrupt, intense direct sun behind glass. Window intensity is not quantified.
Recheck the same position through the year
Seasonal light changes
Inspect the plant before moving it
Signs the light may be wrong
Some light thresholds remain unknown
Limits of this light guide
Sources
- Royal Botanic Gardens, Kew: Plants of the World OnlineTaxonomy; accepted name; synonym
- Royal Botanic Gardens, Kew: Plants of the World OnlineTaxonomy; name status; synonym
- North Carolina State University Extension Gardener Plant ToolboxDescription; light; indoor culture; problems
- Royal Horticultural SocietyQuick facts; where to grow; light; problems
- Royal Horticultural SocietyPlant guide; light; species and cultivar listings