Root Mealybugs

About this condition

An infestation of root mealybugs that feed on roots underground, causing gradual plant decline — often unnoticed until visible symptoms appear above ground.

Common symptoms

White waxy or cottony deposits found on roots or near the soil surface
Plant remains wilted even after watering
Leaves gradually thin, lose color, or appear dull
Plant growth stalls without any apparent environmental cause

Common causes

Introduction via infested nursery stock or contaminated soil at purchase
Multiplication in hot, dry soil conditions
Accumulation in pots that have not been repotted for extended periods
Spread to neighboring pots through shared growing space

Prevention (growing conditions & routine care)

Quarantine newly purchased plants for observation. Repot regularly (every 2–3 years) to check root health. Maintain good air circulation and avoid excessively moist conditions.

When to see a vet

Consider acting within a few days

What can a nursery or grower do?

Specialist nurseries can guide on inspecting root health, repotting into clean soil, and reviewing growing conditions to prevent recurrence. Advice on handling used pots and old soil can also be obtained.

Related columns

The same problem in other plants

Foliage PlantsMealybugs AgaveRoot Mealybugs