Mealybugs are small, white insects that suck the sap from tree aeonium, leading to yellowing and curling leaves. They also excrete honeydew, which can lead to the growth of sooty mould. Wash mealybug-infested plants with warm soapy water and use a systemic insecticide for heavy infestations.
Soft Brown Scale
This pest appears as small, flat, oval, and brown scales on leaves and stems of tree aeonium. They suck sap, causing weak and stunted growth. Use a soft cloth or brush to remove light infestations and apply a systemic insecticide for heavy infestations.
Also known as ‘grey mould’, this fungal disease causes wilting, spotting and browning of leaves, and a fuzzy grey mould during cool, damp conditions. Remove affected parts immediately and ensure good air circulation around tree aeonium to prevent this disease.