Why are there tiny white bugs in my plant soil?

Updated October 2026 · How we answer

Common soil-dwelling bugs

Springtails are tiny, white, and jump when disturbed. They feed on mold and decaying organic matter and are harmless to healthy plants. Soil mites are even smaller, often slow-moving, and also feed on fungi and detritus. Fungus gnat larvae are clear to white with black heads and worm-like; they can chew on fine roots.

Another possibility is mealybugs, which are white, cottony, and usually found on leaves and stems, not just soil. If you see white, fuzzy clusters on the soil surface, it might be mold or fungal growth, not bugs.

What to do

If the bugs are springtails or mites, you usually don't need to act. They indicate moist, organic-rich soil. Let the top of the soil dry out, and their numbers will drop. If you find them unsightly, repot with fresh mix and water less.

For fungus gnat larvae, treat as for fungus gnats: dry the soil, use yellow sticky traps, and apply Bti dunks or beneficial nematodes. If you suspect mealybugs, isolate the plant and treat with insecticidal soap or neem oil.

• Springtails: harmless, jump when disturbed.
• Soil mites: harmless, feed on fungi.
• Fungus gnat larvae: can damage roots in wet soil.
• Mealybugs: white and cottony, usually on leaves.
• Let soil dry out to reduce populations.

From our shops