Pest identification
What's eating my gasteria armstrongii?
Mealybugs
Signs: White waxy tufts between the tongue-like leaves; affected leaves pale and shrink over time
Control: Apply 70% isopropyl alcohol with a cotton swab directly on each colony; follow with neem oil spray weekly
Root mealybugs
Signs: Unexplained wilting or cessation of growth; white powdery colonies visible on roots
Control: Unpot, remove all soil, rinse and soak roots in neem drench, repot in fresh gritty sterile medium
Scale insects
Signs: Small raised bumps on leaf surfaces; yellow halos at feeding sites; sticky exudate
Control: Remove physically with a toothbrush, treat with isopropyl alcohol, spray horticultural oil; repeat after 2 weeks
Keep gasteria armstrongii pest-free
Healthy plants resist pests best. Get the basics right:
Gasteria Armstrongii pests — FAQ
What is eating my gasteria armstrongii?
Gasteria armstrongii is one of the smallest, slowest-growing Gasterias and is largely pest-resistant. Its dense, warty leaves make mealybug detection harder — check carefully at every leaf base. Root mealybugs are a real risk in poorly draining soil. Scale and spider mites appear occasionally in dry indoor air.
How do I get rid of mealybugs on gasteria armstrongii?
White waxy tufts between the tongue-like leaves; affected leaves pale and shrink over time Apply 70% isopropyl alcohol with a cotton swab directly on each colony; follow with neem oil spray weekly
How do I get rid of root mealybugs on gasteria armstrongii?
Unexplained wilting or cessation of growth; white powdery colonies visible on roots Unpot, remove all soil, rinse and soak roots in neem drench, repot in fresh gritty sterile medium
How do I get rid of scale insects on gasteria armstrongii?
Small raised bumps on leaf surfaces; yellow halos at feeding sites; sticky exudate Remove physically with a toothbrush, treat with isopropyl alcohol, spray horticultural oil; repeat after 2 weeks