Why does your Pseudolithos migiurtinus have white cottony spots? Diagnose the cause and fix it with our step-by-step guide.
Mealybugs are small, soft-bodied insects that secrete a white, waxy, cottony substance to protect themselves. They attach to the crevices of Pseudolithos migiurtinus, sucking sap and potentially causing the plant to shrink or deform.
Similar to mealybugs, scale insects can produce white filaments that resemble cotton. These pests colonize the surface of the stone plant and excrete honeydew, which can lead to secondary fungal growth.
In high humidity environments, certain fungal pathogens can produce white, thread-like mycelium on the surface of the plant tissue. This often occurs if the Pseudolithos is kept in poorly ventilated conditions with excess moisture.
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