Mealybug Eradication on Myrtle Topiary: Alcohol Spray and Persistence

Identifying Mealybugs

Flat, oval, fuzzy white insects on leaf undersides and stem joints, plus sticky honeydew. They hide in dense foliage, making treatment difficult.

Treatment Protocol

1. Mix 1 part rubbing alcohol + 5 parts water + squirt of liquid soap.
2. Spray thoroughly to drip point—every leaf and stem surface.
3. Repeat in 5–7 days to catch hatchlings.
4. Weekly inspections thereafter.

Alternative: Brand X Foliage Cleaner

Silicon-based, penetrates crevices. Available from Southwest Plantscape Products.

Critical Cultural Fixes

• Do NOT repot—myrtle hates root disturbance.
• Maximize direct sunlight.
• Water when top ½″ soil dries.
• Prune regularly to maintain shape.

Consider Return

Infestation likely came from nursery. Returning may be easiest if plant is new.