Treatment Planner
Mealybugs Treatment Plan
Why one treatment never works: A female lays 100–600 eggs inside a waxy sac that contact sprays cannot penetrate. At any moment your plant holds eggs, crawlers, nymphs and adults at once, and the full cycle runs 30–60 days. UC Davis IPM notes the adults' waxy coating cuts pesticide penetration by 60–80%, which is why water-based sprays bead up and roll off. Nearly every failure happens at the two-week mark, when the plant looks clean and the invisible eggs are still hatching.
How bad is it?
Dozens visible across multiple leaves and stem joints.
Expect this to take 8 weeks
Day 1
TodayIsolate, then physically remove every insect you can see.
Check for: Every mealybug you touched with alcohol should turn from white to translucent tan. Any still bright white was missed.
Days 3–5
This weekCatch the survivors you missed.
Check for: You should be finding markedly fewer than on Day 1. Finding just as many means the first pass missed a nest — go back over the plant systematically.
Day 7
Week 1Hit the first hatch of crawlers.
Check for: Expect to see new tiny yellowish-pink specks. That is the hatch, and it is why the schedule continues.
Day 14
Week 2Rotate mode of action.
Check for: Visible adults should be sharply down. New crawlers may still appear; that is normal at this stage.
Days 21–28
Weeks 3–4Break the second generation.
Check for: By Day 28 a working treatment shows clearly fewer insects at each inspection than the one before.
Days 35–56
Weeks 5–8Run out the clock on the last eggs.
Check for: Two consecutive clean weeks with zero mealybugs found is the finish line — not the first clean inspection.
Still not working?
Still finding mealybugs after eight weeks? Check for root mealybugs by sliding the plant out of its pot and looking for white waxy deposits on the root ball and inner pot wall — surface sprays never reach them, and they need either a soil drench or systemic granules. If the plant is a cherished specimen, taking clean cuttings and starting over is often faster than salvaging a chronically infested root system.
Read the full mealybugs guide →Other treatment plans
Not certain this is what you have?
Use the diagnosis tool first →Get seasonal plant care reminders and pest alerts.