Pest identification
What's eating my crassula marnieriana?
Mealybugs
Signs: White fluffy wax wedged between stacked leaf beads or at stem junctions; leaves shrivel or turn yellow near the colony
Control: Apply 70% isopropyl alcohol with a fine brush between each leaf pair; for larger infestations drench with neem oil solution; repeat weekly for a month
Spider mites
Signs: Pale stippling on leaf surfaces; webbing visible along stems in hot, dry, stagnant air
Control: Increase airflow; spray thoroughly with insecticidal soap or neem oil, ensuring coverage between all leaf pairs; repeat after 7 days
Scale insects
Signs: Hard brown or waxy oval bumps along stems; sticky honeydew and sooty mould on lower leaves
Control: Scrape off individual scales with a toothpick; apply horticultural oil or systemic insecticide; check undersides of leaves thoroughly
Keep crassula marnieriana pest-free
Healthy plants resist pests best. Get the basics right:
Crassula Marnieriana pests — FAQ
What is eating my crassula marnieriana?
Crassula marnieriana (Jade Necklace) is a stacked-leaf succulent that mealybugs colonise readily between its bead-like pairs. Spider mites and scale insects are secondary threats in dry indoor conditions. Its tight stem structure hides pests well, making monthly visual checks during watering important. Mealybugs are by far its most reported pest.
How do I get rid of mealybugs on crassula marnieriana?
White fluffy wax wedged between stacked leaf beads or at stem junctions; leaves shrivel or turn yellow near the colony Apply 70% isopropyl alcohol with a fine brush between each leaf pair; for larger infestations drench with neem oil solution; repeat weekly for a month
How do I get rid of spider mites on crassula marnieriana?
Pale stippling on leaf surfaces; webbing visible along stems in hot, dry, stagnant air Increase airflow; spray thoroughly with insecticidal soap or neem oil, ensuring coverage between all leaf pairs; repeat after 7 days
How do I get rid of scale insects on crassula marnieriana?
Hard brown or waxy oval bumps along stems; sticky honeydew and sooty mould on lower leaves Scrape off individual scales with a toothpick; apply horticultural oil or systemic insecticide; check undersides of leaves thoroughly