Clear Slime on Pygmy Sundew Soil: Slug Trails vs. Algae vs. Mold

Clear slime covering Drosera nitidula × pulchella soil under fluorescent lights—no plant contact. Differential diagnosis needed.

Possible Causes

• Slime mold: Usually colored (yellow, orange), not clear
• Slime algae: Typically green, common under artificial lights
• Slug trails: Clear, shiny, often near pot edges or drainage holes

First Step: Slug Inspection

Check pot undersides, drainage holes, and crown area—slugs hide in cool, dark spots and leave characteristic clear mucus trails.

If No Slugs: Soil Surface Replacement

1. Carefully excavate top ¼-½ inch of soil
2. Replace with fresh medium
3. Avoid full repotting—pygmy sundew roots are extremely fine and fragile

Follow-Up

If slime returns, photograph and consult. Document color, texture, and location for accurate diagnosis.