Crassula (Jade Plant) Pests: Mealybugs, Aphids, or Scale?

A crassula owner saw tiny white specks (like mineral deposits) and 1mm grub-like organisms on a black table. Initial diagnosis suggested mealybugs, but the insects didn't match.

Identifying the Pest

Three pests attack crassula:

• Mealybugs: Cottony white egg sacs; juveniles fly but are microscopic.
• Aphids: Soft-bodied, various colors, cluster on new growth.
• Scale: Flat, oval, immobile bumps on stems/leaves.

The "grubs" could be juvenile stages of any.

Safe, Effective Treatment

Crassulas are extremely chemical-sensitive—commercial insecticides often kill the plant. Rubbing alcohol spray is the only safe option: kills on contact, no plant damage. Spray thoroughly (all surfaces, soil) twice weekly for a month, then weekly for two more months to catch hatching eggs.

Persistence with alcohol is the key to eradication without losing your jade.