What's eating my euphorbia suzannae?

Euphorbia suzannae, a clustering cushion-forming South African Euphorbia grown as a houseplant, is most vulnerable to mealybugs hiding in the dense tubercle clusters. Root mealybugs and spider mites follow when conditions are stressful. Its milky latex deters most chewing pests but does not stop piercing sap-suckers.

White waxy fluff concealed deep between tubercles; yellowing and stunted new growth. Use a fine-tipped alcohol-dipped swab to reach crevices; follow with systemic neem drench; repeat every 10 days.

Plant looks wilted or soft despite correct watering; white powder on roots found at repotting. Remove from pot, wash roots thoroughly, treat with dilute insecticidal soap drench, and repot in fresh gritty compost.

Dull, slightly pitted skin surface; fine dusty webbing in very low-humidity conditions. Wipe surfaces gently, raise ambient humidity slightly, apply neem oil or a miticide spray, and repeat weekly.