悟る · diagnose & fix
Cannabis Root Rot
Disease / mold · also: pythium, brown slimy roots, hydro root rot
Brown, slimy, foul-smelling roots that stall the whole plant — root rot, most common in warm or low-oxygen root zones.
Not sure it's root rot?
Snap a photo and get a free read — no signup. Satoru weighs the visual against the conditions that cause look-alikes, so you treat the real problem.
What it looks like
Healthy roots are white and firm; rotting roots turn brown/tan, slimy, and smell foul. Above ground the plant droops, yellows, and stalls despite correct feeding — symptoms that mimic over-watering.
Symptoms
- Brown, slimy, smelly roots (vs. white and firm)
- Drooping, yellowing, stalled growth
- Symptoms that don't respond to feeding
- Worse in warm reservoirs/medium
Causes
- Warm root zone / reservoir (over ~22°C/72°F)
- Low dissolved oxygen, stagnant water
- Over-watering in soil/coco
- Pathogens introduced to the system
How to fix it
- 1Cool the root zone / reservoir into range
- 2Increase oxygenation (air stones, fresh water changes)
- 3In soil/coco, dry back and improve drainage
- 4Use beneficial-microbe or oxidizer products per the system type
Prevention
- Keep reservoir/root-zone cool and oxygenated
- Don't over-water; airy medium
- Clean equipment between runs
悟る · how satoru tells it apart
Root rot looks exactly like over-watering from above. Satoru weighs your root-zone temp and watering log to point you below the soil line, where the real problem is.
Commonly confused with: Overwatering, Nitrogen Deficiency.
Not sure it's root rot?
Snap a photo and get a free read — no signup. Satoru weighs the visual against the conditions that cause look-alikes, so you treat the real problem.
More plant problems
Educational reference for cultivation troubleshooting. Symptoms overlap — when in doubt, match against your own conditions. Satoru fuses your photo with your logged environment for a grounded read.