Dealing with Mealybugs on Gloxinias and African Violets

A gardener has fuzzy white spots on gloxinia stems and leaves — likely foliar mealybugs. Previous alcohol treatment killed the plants. They ask about causes and whether to use new soil when restarting.

Mealybug Identification & Treatment

Cottony masses indicate mealybugs. Alcohol on a damp (not dripping) Q-tip is a standard treatment but not foolproof. To preserve the variety, take healthy leaves, dip in 10% bleach water for 30 seconds, and root them in fresh soil.

Prevention

• Always use fresh, sterile soil when repotting.
• Mealybugs can hitchhike on clothing — change clothes and wash hands after gardening outdoors.
• Inspect plants regularly and treat early.