Minimum DLI for Maintenance describes the lowest total daily light dose required for a plant to maintain itself indoors without gradually declining. It represents the point where daily photosynthesis roughly balances daily respiration over a 24-hour period.
At this level, the plant can keep existing leaves alive but has little energy left for growth, root renewal, or flowering. Water use is reduced, dry-down slows, and the plant becomes more sensitive to issues like oxygen restriction and nutrient buildup. Decline at or near this level is often slow and easy to miss.
Minimum DLI for Maintenance is not a growth target. Plants held near this threshold may appear stable for long periods while quietly losing vigor and resilience.
In short, Minimum DLI for Maintenance defines the daily light dose needed for survival, not performance, helping growers distinguish between keeping a plant alive and supporting healthy indoor growth.
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