Cannabis Clone Wilting Under a Humidity Dome

A fresh cannabis cutting can wilt briefly because it has leaves but few or no roots to replace lost water. Continued wilting under a humidity dome means the cutting, stem, plug, temperature, and light need separate checks; increasing humidity alone will not correct a damaged stem or saturated propagation medium.

Why is a cannabis clone wilting under its dome? Check humidity, heat, light, plug moisture, stem damage, and signs that roots are ready for venting.

Common Causes

• The dome was vented too quickly or leaks enough that an unrooted cutting is losing water faster than it can replace it
• Excess light or heat is driving transpiration even though the air beneath the dome feels humid
• The cut end has poor contact with the plug, an air pocket, or stem damage that limits water uptake
• The plug is saturated and cool, allowing the stem base to weaken before new roots form

How to Tell Which One You Have

Measure temperature and relative humidity at leaf height, check that the plug is evenly moist rather than dripping, and inspect the stem where it enters the medium. A clone that firms up when the dome is closed but wilts soon after venting may simply lack enough roots for acclimation. A clone that stays limp in stable conditions, has a pinched or dark stem base, or smells sour is more consistent with cutting or root-zone failure.

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